This level is only available when the Daredevil Comet is in orbit of Battlerock Galaxy.
This fight is identical to the boss fight in Topmaniac and the Topman Tribe. The biggest difference is that you only have one life, meaning you cannot take damage. This basically means you have to be extra careful and plan your moves.
The Topmaniac boss fight has three phases. During the first one, there will only be the Topmaniac and a few Topminis. You’ll first need to jump on top of the Topmaniac to incapacitate it briefly. You can’t spin into it first as it has spike defences. When it’s temporarily down, you’ll need to spin it into the electrical barriers to the sides.
The second phase is very similar, except there are a lot more Topminis about. Repeat the process again to damage him some more. During the final phase, a couple of Spikey Topmen will spawn to make the fight a little tougher. If you can, just ignore them and focus on the Topmaniac to defeat him. When he’s defeated, a Power Star will spawn.