This is actually really interesting and fun game, just lacking some levels. You can make the levels like Day 1, 2 , ... to make the game progressively harder. This game needs a game loop, like when does it ends. It could end when fear reached max, but that won't makes player feels satisfied because no reward. One way is maybe to add a timer to keep track how long the player endure, increasing the time and getting better at it can be consider a reward too.
For bugs, the only one i encountered was the sticker not very reactive, like the sunny sticker took alot of tries to peel it off.