It's a fun concept. Maybe it should have a scoring system that rewards accuracy by giving bonus points for blowing up more than 1 enemy. And maybe put some walls or other obstacles in later levels for more variety
I'm glad you had fun and liked the title and I agree with your feedback. I remembered to flip the sprite for the regular character but not when he was on fire oops. I got too focused on gameplay and didn't put as much effort into things like audio
It was fun but maybe it could use some more enemy types but the challenging way the big enemies move and shoot make up for it. You could tell the player how to get to the repair shop . Maybe leave enemies on the field after the repairs so it won't disrupt the flow.