I really enjoyed this game, it's very addictive! The visuals remind me of Geometry Wars, absolutely love that style. The gameplay itself is simple but engaging; it takes some skill to time the acceleration with a line of enemies. I only got to level 12(? I saw the blue fast triangles, they're mean lol) but it was a good time.
I would've appreciated some extra dopamine hits and/or flexibility when it comes to progression. If there were checkpoints at every 5 waves, I would feel more likely to keep trying for Wave 25; as it is now, I'm content with my ability to reach 12 twice. I also don't think killing enemies does anything (besides clearing the area, which is important for staying alive I guess), which feels ripe for tying into the existing upgrades or a set of unique ones (laser-scope aim? bullet time? anything to make killing easier). But these are just ideas for post-jam; the game as-is feels very good to control and polished!