Damageless to make a bigger difference beetween any% and it and to increase the challange.

Timing should be from the last frame of "bad end" of level IX to the first frame of the closing animation after the bossfight.

This would be a test run:

Why not, this could be fun. The first frame should probably be on chapter select instead of the end of level 9 (if you can select the boss fight, i'm not even sure about that).

You have to do the level with the door before, i would like to cut that out to have a pure boss fight @Badoum

The boss fight is part of the level. :/

That could be a cool idea.

Very good idea, totally agree.