story and narrative is great, i like metanarrative games, but i think gameplay could be better, like movement and jumping not very polished, you could make jump more proportional make speed acceleration/decceleration etc etc read book “game feel” by steve stink, its only available in english, but it contains a lot of useful information, also you can check corgi engine for ready platformer controller with stuff you need to make player character that would be nice to control