Love the art and the concept.
I think when the player goes crazy, it's a good balance between being able to restrain the character if you try but also not having control.
I think the objective is a bit simple which is fine for a game jam and serves the purpose of forcing the player to explore the cool world you've crafted.
I think something that would have added a lot of flavor is maybe some speech text for the player's thoughts as he progressively breaks down. Would be a good chance for some lore and explain how the character became insane.