"Once there, head inside the cave"

and meet the 30 level ice troll, thanks for warning. :)

"Guarded Treasure (Level 21)" and "Iron Maiden’s Place of Power"

Should go in reverse order, assuming, as the text suggests, that we did go to retrieve the sword.

"with an unmarked trail on your map running downhill to the south-west to the beach"

It's marked in next-gen version.

"we have made this Witcher 2 walkthrough"

ahahaha, nice. :)