honestly, its a pretty decent game. although i do have some recommendations if you plan on ever updating it.
1: make aiming easier. add a target lock function or make aiming more smooth.
2: allow player to move while aiming. just make the player move slower or something while aiming, its just a QOL must have.
3: make controls more responsive. i dont know, while i was playing it just seemed like some of the controls just didn't work sometimes.
4: make escaping a little easier. i have this same problem with the game "captivity", where the longer the game goes on, the harder it is to escape until it just isn't possible. so maybe just make it a lil faster.
5: make an easy mode, i dont know, just add my suggestions to easy mode and leave it at that.
those were my 5 recommendations for things you could add to the game to make it better. other than that, keep up the good work.