Really nice game ! Overall, the game is really polished and enjoyable, the story is nice and, for a 7 days jam, that's really impressive, good job ^^ ! I have noted 3 little that, in my opinion, you could improve ^^ :
- The illusion mechanic is nice, but is sometimes a little bit unfair : the character is able to detect fake blocks from a distance, but its slipperiness made me still fall a couple of times ^^'. It was not "trial and error", which is good, but sometimes felt like it.
- The ground detection on the pushable blocks is also very strange, it feels like they use a circle collider instead of a box collider, so, sometimes, the jump imput is "eaten" ^^'.
- Certain camera transitions are badly placed, and I died in holes I didn't knew were here.
But there are just 3 little things, the game is still very good like this, congratulations !
Also, I finished the game with, then without checkpoints. I was a bit disappointed to not have a "true ending" at the end of the "insane" mode, but for a 7-days jam, I won't complain ^^. You have a nice little concept and I would love te see more of it in the future =)