You don't remember how you got in this place but you know for sure you'll have to solve puzzles and avoid dangerous situations to find your way out.
A, D or LEFT, RIGHT Arrow: move the character
SPACE, Z, W or UP Arrow: jump (holding the button makes the character jump higher)
W or UP Arrow: enter doors, activate revive portal
WASD or Arrows: mash this buttons to escape when attacked by soulstealers
M: mute music
+ / - : change volume
P: pause the game
R: restart the level
ESC: return to menu.