Main Quest: Divine Beast Vah Ruta
To kick off this quest, Muzu will tell you that twenty Shock Arrows are needed. Prince Sidon will go to the nearby East Reservoir Lake to await you while you collect them, and point out a shortcut you can use for easy access to the mountain with the Lynel.
Note: If you picked up any Shock Arrows from Lizalfos along the way, you might already have quite the collection of Shock Arrows. You can buy the rest from shops and bypass fighting a Lynel if you wish to do so. We will be heading to the mountain.
Exit the Zora's Domain via the east bridge. Go left and you will run into a sign that you can read to see that the shortcut Prince Sidon mentioned is to your left. The image above shows you the general path you will want to follow to make use of the shortcut.
Once you are here, swim forward and then press [A] when prompted. The Zora armor will let you ascend the vast waterfall. As you reach the top, Link will launch into the air and automatically activate the Paraglider.
Paraglide forward as far as you can, and then repeat the process for a second time to ascend the second waterfall. Stamina-replenishing food will help if you run low, but this process is doable with one wheel. You will finally land on solid ground, having reached the top of the waterfalls. Make your way a short bit forward over the rocks for the next leg of our shortcut.
This smaller lake has another waterfall in front of it. Clear it and you will finally arrive at the mountain.
Work your way up the winding path. If you pass any trees with Shock Arrows sticking out of them, feel free to pluck them. You will need twenty to complete this section of the main quest, after all.
Once you have reached the top, you will trigger a cutscene that shows a Lynel appearing. After the cutscene, the Lynel will just be hanging around. It will not be aware of your presence unless you make a lot of noise or begin running towards it, or if it gets close to you. If you love taking photos for your Compedium, grab a few shots and then save your game.
Note: The upcoming boss fight will take a long time and burn through a lot of your weapons. It is highly recommended you max out whatever your inventory capacity is, as you will need all the strength you can muster.
Boss Fight: Lynel
The Lynel has a ton of health. You are definitely underpowered for this fight, but clearly the game has no qualms throwing a bunch of stuff at you that is way too strong for your gear.
Fighting the Lynel is actually a fairly cut and dried process. Its attacks are clearly scripted and it only uses a few of them, making it an excellent enemy to practice your combat skills on. If you die, hopefully you saved before engaging so that you can simply try again.
The Lynel will use its sword to slash at you or will use its sword and shield to double-slash at you. These can be easily dodged using a backflip to activate Flurry Rush and deal damage. The Lynel will also charge frequently. Side hop or run to get out of the way. Note that its charges can be dodged with perfect timing for Flurry Rush, it's just more difficult.
As the fight wears on, the Lynel will start breathing fire at you. The projectiles are slow-moving so just keep running to the side. The Lynel will always shoot fireballs at you in sets of three, and the burning grass will create an updraft you can use to Paraglide into the air.
Then you can either shoot it from the air, or you can even descend upon its rump and ride it, dealing damage all the while. Be careful, while up in the air the Lynel might shoot at you with its Shock Arrows.
The fight is long and can easily wear you out. Hang in there and finish the fight. The Lynel will drop 10 Shock Arrows, along with an assorted variety of gear that you definitely want to grab.
Note: Lynels carry some of the best gear in the game. Later on as you become more powerful it is actually a great idea to farm them to keep your inventory full of awesome weapons!
You might not have twenty Shock Arrows from just the Lynel, so run around the area where you fought it. There will be Shock Arrows sticking out of trees, laying on the ground, embedded in rocks, everywhere. Grab them all and once you hit twenty, the main quest will update and your destination will change to the East Reservoir Lake, where Prince Sidon awaits you.
Jump off the top of Lulu Lake's waterfall and just Paraglide down back to the fork in the road with the signpost. This time, hang a right and climb up the staircase.
East Reservoir Lake
Speak with Prince Sidon and tell him that you are ready. It is now time to gain access to Divine Beast Vah Ruta, and calm it down in the process to stop a potentially disastrous flood.
Divine Beast Vah Ruta
You will be riding on Prince Sidon's back, and once he gets close to the waterfalls spouting from Vah Ruta's sides, you can climb up them and then fire an arrow at the weak points all along its body.
Vah Ruta will fight back, however, in the form of ice blocks that it will throw at you. Activate Cryonis during these sequences and break the blocks as soon as they are within range. Throughout the fight, Vah Ruta will throw both regular blocks at you, and spiked blocks, which will land in the water and track you.
After all of the ice blocks are broken (or they hit you, dealing a small amount of damage), Prince Sidon will approach the waterfalls. He will cycle between two of them and each time he gets close to one, the prompt to climb the waterfall will appear for a brief moment in time. Press [A] the moment you can and then while in the air, shoot the glowing pink spots you see on Vah Ruta's body by pressing the ZR shoulder button.
Be sure to press [A] once you land back in the water to Hold on to Prince Sidon's back so that you do not drown.
You will be repeating this process six times to hit all six weak spots. Once you have finished, Vah Ruta will calm down and open up its entrance. The skies will also clear. Prince Sidon will thank you, and then he will carry you up to the entrance point for Divine Beast Vah Ruta.
Now comes the hard part: Going into the belly of the beast and wringing it back from Ganon's control.
You will automatically place the Sheikah Slate in the pedestal, and this will activate Vah Ruta as a fast travel point during the time you work on completing it. Mipha's voice will speak with you and welcome you to the Divine Beast. She will tell you that your first goal should be to get to the Guidance Stone, which will give you a map of Vah Ruta.
At this point in the game, feel free to go ahead and pack up some food and gear, especially if the Lynel fight emptied your bag.
Note: Within the Divine Beasts, you are inside a dungeon. As a result, things save differently. If you die, you will not regain any items you might have used, unlike while you are out in the open world. However, you will also not lose any progress you might have made prior to a game over.
Once you are ready, go ahead and enter.
Inside Divine Beast Vah Ruta
As you enter you will see the entryway guarded by a gross-looking eye. This enemy will show up frequently inside the Divine Beasts and is part of Ganon's corruption. Shoot it, throw a bomb at it, or whack it with a weapon to destroy it.
Up ahead is a Guardian Scout. It has the same level of health and power as the very first Guardian Scout you fought in Oman Au Shrine; that is, it is pitifully weak and can only tickle you with its eye missile. Dispatch of it and to go your left.
You can see the Guardian Stone behind a gate. Before we go ahead and get past it though, use Magnesis to pull up a treasure chest hiding under the water. Open it for an Ancient Spring
Destroy the eye that is above and to the right of the gate. Then go up to the gate and, just like in the Great Plateau, use Cryonis to push up the gate. Slip underneath and activate the Guardian Stone. Mipha will speak to you again, telling you that you now have a map of the Divine Beast. There are five terminals located all across the Divine Beast and you will need to activate all of them to win back Vah Ruta.
The terminals are marked on your map. We will be covering the terminals in the order of closest to furthest.
Note: If you open up your Sheikah Slate you will see a bunch of purple arrows in an arc. This indicates that you can control the positioning of Vah Ruta's trunk via your Sheikah Slate to alter and change the water flow from its spout. We will be using this feature a lot in this dungeon!
Go back to the first room you were just in and locate the large gears on the wall. Use Magnesis to turn the lever and spin the gears. Doing so will lift the first terminal out from under the water, allowing you to activate it.
Head outside the Divine Beast through the exit across from the entrance and go up the ramp. Inside the second floor room will be another Guardian Scout, this time equipped with a sword. Kill it and you can pick up its Guardian Sword.
Note: The Guardian Scout will instantly die if you accidentally or deliberately push it into the water.
This room has two large wheels, one on the left and one on the right. The left one is the one that concerns us right now, but first let's go claim another treasure chest. Run up to the wall and place an ice block using Cryonis right in the corner of the water pool. Climb up it and turn to your left on top of the wall for a silver Rupee worth 100 Rupees. We're rich!
The second terminal is actually inside the big gear. In order for us to access it, we will need to block up the flow of water right when the terminal is at the bottom of the gear. Use Cryonis to block the water flow and then walk into the gear and activate the second terminal.
That larger wheel to the right is where our next terminal is. We can certainly see it from here, but to interact with it we will need to ascend to the third floor of Vah Ruta. Head out of the exist and work your way up the ramp.
In the middle is another bit of Ganon, this time complete with a mouth that will continually spit floating enemies at you until you destroy the eye on the top of the left wall. Shoot it and the whole formation will disappear.
Enter the third floor and you can finally interact directly with the puzzle. The wheel is currently stationary, so in order to make it spin we will need to adjust Vah Ruta's trunk. The Divine Beast is constantly spouting water from its trunk. If we can get it to spout water onto the wheel, it will move. Open up your Sheikah Slate and move the trunk to the shown mark in the image gallery above.
Water will pour in and the wheel will move. You will see that as the ball hits the top of the wheel, gravity enable sit to slide downward and hit a switch which opens up the gate to the terminal that is almost rotating inside the wheel. Use Stasis at the right moment and then enter the terminal. You will want to time Stasis such that you use it right before the ball will fall back off the switch, or else the Stasis will wear off before the terminal rotates up to you.
Before we head to the next terminal, there is a treasure chest we can open here too. The treasure chest is sandwiched between two platforms that also slide around depending on where it is in the wheel. As the treasure chest plus its platforms slide down, the top platform takes a little while longer to settle. Use Stasis on the top platform while it has slid off the chest to open it for an Ancient Core.
This next terminal is a bit farther away than these last three. First, return back to the second floor and position yourself right between both spinning wheels. The Stasis puzzle wheel has a lot of wide spokes. When ready, jump onto one. Make sure it doesn't have any corruption spots on it. There is an eyeball hanging off the bottom of one of the spokes. If you run into it, destroy it.
Ride the wheel up the the top and then jump off onto the fourth floor of Vah Ruta. You will be confronted by another Guardian Scout, this time holding a spear with a bit more health than the last one. If it falls off, it will respawn so kill it. Unfortunately, you cannot pick up its spear.
Activate the orange floor switch to your left to create a waterfall. If you ever find yourself unintentionally dropping down to the second floor, you can ride this waterfall up with your Zora armor for a quick shortcut.
Run through the hallway and you will find yourself exiting Vah Ruta through the forehead. Move the trunk down to the lowest possible level. Now you can Paraglide down and run along it. Open up the treasure chest on the trunk for an Ancient Shaft.
To get to the next terminal we need to get to Vah Ruta's forehead area. To do this, stand on a ledge above the treasure chest, as far up as you can. Then, move the trunk up to the highest position. As the trunk moves, you will be lifted higher and higher. Jump off and Paraglide to the forehead. This might take a few tries, but you can always reset the trunk to be horizontal and try again.
Once you land on Vah Ruta's forehead, drop down the rectangular hole and you will land on the upper floor inside the Divine Beast. You will see that the fourth terminal is below you and is surrounded by fire. Defeat the eyeball on the ceiling.
Use Magnesis on the lever to spin the gears. After a few spins it will no longer spin. Then, move Vah Ruta's trunk to the fifth position from the top. Vah Ruta's water spout will spray directly onto the flames, extinguishing them. Drop down and activate the terminal.
There is another treasure chest right next to the terminal so let's grab it. Go forward from the shrine to the ledge and fall down. You will drop off onto another ledge sticking out from the wall. Open the treasure chest for a Knight's Halberd.
We finally are at the last terminal. Return to the tip of the elephant's trunk by Paragliding from the hallway we used earlier with the trunk lowered down all the way. This time, try to land on the ledge sticking out from the trunk. We are going to take a small detour first to claim another treasure chest on Vah Ruta's back.
Again, raise the trunk up all the way. Stand on the very top of Vah Ruta's trunk so that you can be stable for a longer period of time, allowing you more height to Paraglide. The treasure chest is on the left side of Vah Ruta's back, but it will not be accessible until you defeat the Ganon corruption on the right. So Paraglide to the right and destroy the eye.
You can get to the treasure chest on the left by repeating this process, and instead Paragliding to the left, or you can actually jump carefully to Vah Ruta's crest and run across it, then use jumping and Paragliding to get to the left side. The treasure chest contains 10 Ice Arrows, so it is well worth the detour.
Lower the trunk again and Paraglide again to the tip of the trunk. Now, raise Vah Ruta's trunk to the third position from the bottom. This will make the very tip of its trunk flat, so you can walk onto it. Go forward and look down and you will see the fifth terminal is sideways on the trunk!
Raise Vah Ruta's trunk to the third position from the top. As you do this, the terminal will become vertical and you can walk right up to it and activate it. Mipha will congratulate you on a job well done, and notify you that the main control unit of Divine Beast Vah Ruta has opened up. If you activate it, you can flush out Ganon and Mipha will regain control.
Return to the room where you first entered the Divine Beast. You will see a newly appeared staircase that leads to a wide open chamber with a larger pedestal at the end. Activate it, and...?
It looks like Ganon is going to make the job difficult for us. This is the boss of Divine Beast Vah Ruta, the Waterblight Ganon, and until it is destroyed you cannot activate the main control unit.
Waterblight Ganon holds a long, blue spear that he will frequently use. However, his spear attacks are clearly telegraphed, giving you time to get out of the way. Waterblight Ganon can throw the spear a fair distance, but has a long windup period. He will also do a wide swing across the room, or a forward thrust.
At half health, Waterblight Ganon will enter phase two of the fight where he will now hang around in the air. The water will rise, meaning you can only fight on four platforms. Similar to when you had to quell Vah Ruta's water spouting, Waterblight Ganon will throw ice blocks at you. Destroy them with Cryonis and sometimes he might be stunned, during which time you can hit him with whatever weapon you have.
Once Waterblight Ganon reaches critically low health, he will use his eye to fire a laser at you, just like a Guardian. It hits as hard as a Guardian too, and is much harder to dodge. Your best chance at survival is to parry with your shield.
The best, most stress-free way to fight Waterblight Ganon is to use your Shock Arrows. Being water element, Waterblight Ganon is very weak to lightning. Additionally, Waterblight Ganon will always become stunned if you hit him in the eye, which is his weak point. Shoot Waterblight Ganon, in the eye if possible, and if you stun him, whack away with your melee weapons.
Note: If your weapons begin to flash red because they are about to break, go ahead and throw them. Throwing weapons guarantees that they will break but deals double damage, allowing you to get the most mileage out of your more fragile gear.
Once defeated, Waterblight Ganon will be expelled from the Divine Beast and you will receive a heart container! Be sure to actually press [A] and pick it up. If you do not want it for some reason, just leave it be.
You can now finally, actually activate the main control unit. Beware, once activated, you cannot return to this dungeon. If you missed any treasure chests along the way or want to go back and explore some more, now is your chance to leave.
Once activated, Mipha will appear before you. She will gift you with her special ability, Mipha's Grace. It is an incredibly useful ability that will revive you automatically once if you are killed. It essentially gives you two health bars. Once used, Mipha's Grace will need approximately 20 minutes to recharge, but it is literally a lifesaver and will make the rest of your journey much easier.
Note: If you ever find yourself wanting more of a challenge, you can disable Mipha's Grace and all the other abilities the Champions give you at any time.
After the cutscenes, Mipha will teleport you out of the Divine Beast and pilot it to the top of the nearby mountain, where Vah Ruta will fire a laser at Calamity Ganon in Hyrule Castle. You will return to the entrance of Zora's Domain. King Dorephan wishes to speak to you and will gift you the treasure chest near Muzu.
If you open up the treasure chest, you will obtain the Lightscale Trident. This was Mipha's weapon when she used it, and now it is in your possession.
Note: Yes, the weapons from the Champions can break. However, you can get them reforged if you have the specific materials required. That makes them technically "unbreakable".
Congratulations, you have freed the first of the four Divine Beasts!