Raging Fire

These are encountered in the narrowing lava room.

A raging fire attacks in melee range.

You must kill these and use their bodies (on?) with the limited time and space you have. For the first wave, you have 60 seconds to kill 6; for the second, you have 50 seconds to kill 5; for the third, you have 40 seconds to kill 4. 30 seconds after killing the third wave you will be teleported to the next area and receive the achievement Go with da Lava Flow.