Throughout the game you'll have to combine the usage of both human and demonic powers. Each level is designed to have challenges that pretain to the current state of your body. For instance, at the beginning of the game, you'd be able to reach through flames and other extremely harmful things, allowing you to grab things, flip switches, etc. Later, when half of you're body (and head) is demonic, you can switch between demonic and human thought, allowing for all sorts of interesting puzzles.

I'm enjoying this a good bit. I keep getting curious when I see things and end up getting killed 

I did, however find a collision error:
___________________________________________
ERROR in
action number 1
of Collision Event with object objProjectile
for object objCancerBeast:

Error in code at line 1:
   if my_energie2>other.energie energie2-=other.energie else

at position 4: Unknown variable my_energie2

I figured I should post it. I registered just for you