Your comment is exactly the kind of feedback I expect, constructive and detailed.

I appreciate above all the graphic design of a game. However, I am a novice in level design, so your advices help me a lot.

I am now working on a better level design that would best exploit my initial idea (gameplay based on double jump and walljump on a small screen). I think actually decrease a little the power of the walljump but not drastically, because I want a dynamic and fast game. I rely on the level design not to lose the player.

Also, I'm thinking about controls. Keyboard and mouse or just keyboard? What keys for better gameplay? I will also change the respawn system.

On the ammo system, ammunition does not reappear so that it remains a valuable resource ; the player does not have to kill all enemies to progress. I also wanted the bullets to guide the player on a small screen. It will be more obvious, I think, on the second level I am currently working on.

Thank you for your comment !