Great game, the concept is really creative and fun, I enjoyed playing through the entire game. One idea I had while playing, it felt a little frustrating that you could play "perfectly" but still take on corruption because you have to enter a corrupt space to recover a memory. I think it would just feel a bit better for the player if you don't take corruption only for the first time you enter a corrupt tile, so you can have "perfect" runs for levels where you never take any damage. Overall balance would be exactly the same since you can then reduce the player health by 1 to account for the change, so it'd be a purely psychological change for the player.
Excellent submission!