I scored 258 points on my third attempt. It's a pretty cool and stylish bullet hell game. The first time I died was by running into an enemy corpse – I kind of suspected that corpses were dangerous but decided to check anyway.
The sound effects are nice, and the attention to detail is great – the enemies pulse when hit, and there are varied sound effects.
Gameplay-wise, as the game progresses, you end up being cornered either into a wall or a corner, making it difficult to escape since you start getting surrounded by lava. Plus, shooting within a limited range is more advantageous than standing in the middle of the map.
If developing the idea further, you can maybe add some sort of progression for the player – maybe shot upgrades.
Overall, it's a well-polished game for a jam.