This is really fun! There aren’t many mechanics, but they all work well together. Sometimes it felt like it wasn’t possible to defeat all enemies in the early levels, before getting any bomb upgrades, though I’m not confident on that (either way, money isn’t difficult to get, so I could just heal after those levels). I made it to level 13 on my best run. I will admit, though, that the game started to feel repetitive after a while. I think that if my run had gone much further, it might have stopped being quite as enjoyable. Still, nice work on this!