I love the concept, a bit boring, you just shoot and shoot.
I don’t understand the use of limitation, I didn’t see any “1 button 2 actions” buttons. I love the flamethrower idea, I restarted the game a couple times though and there seems to be a glitch where it just doesn’t work for some reason, both if i shoot from a distance and if I shoot near the enemies.
The art looks mixed, the bullet seems more realistic than the enemies and the player. Personally I would have maybe added an outline to enemies.