I have been playing this intermittently but I'm gonna leave this base comment because I feel like I'm ready to make a comment on the game and my assessment won't change by level 4. (although I'll just update the comment if it does).
Anyways, I enjoy a lot about this game. The graphics style just works, it's clashing and nightmareish exquisite corpse that assaults your senses but not so much that it is unplayable. UI is great too, reminds me of cruelty squad. I love the heart replacement mechanic to end the level, its a great aesthetic. ALTHOUGH, it is not clear on the outset that this is how you end the level. I yeeted the uber heart twice because I didnt think about using 'R as a utility. I was using 'R' as my defacto reset.
I love the enemy bounce mechanic. I enjoy mechanics that seem like bugs but are also intentional and are also exploitable as speedrun strats.
I imagine this could easily get a full release so i'll drop a few opinions. I think you could lean harder into mechanics like the bounce one as you keep developing. because I will say the level 1 bouncer things are way more fun than dealing with shooter enemies. I also think later levels could be more open, just so more insane strategies can get developed. Other speedrun friendly mechanics would include a quick reset and a live timer.
People have mentioned performance and its something you know about so I won't go on about it. Some of the physics are wonky. Massive Box physics especially.
Congrats on the release! Also I'm gonna keep up the trend of posting the level 1 IL speed run lol