Thx a lot ! And yeah I wanted to match the music with the level and for the difficulty, the first version was too easy, so I made it harder, it was too hard, so I made it easier, it was too easy so I made a little harder, but I think less harder would have been better xD. Probably increasing the cooldown of spawning enemies would be enough. And for the perspectives mechanics, at first, I wanted to do this for all the map, but it took too much time (I implemented it on the last day of submission, before the submission time was delayed by 12 hours), so I kept it but only for "locked" parts of the map.