This is a really good game. The mechanics are simple, but super interesting. Using your guns knockback physics to move, while also watching out for enemies makes for a fun and tactical gameplay loop. Saving for upgrades only enhances the gamemplay loop even further.
Only thing that bothered me was that the hull was able to go offscreen (especially at the top or top-corners of the screen). This made it really hard to see where you should shoot to get out of the situation. It's also what made me die in most scenarios. Otherwise great game