its pretty fun! I really like the rasterization lines & the limited colour palette. the music and sound effects are fitting.
I wont lie I'm not a fan of the mascot, its a bit... lewd for my liking lol. the difficulty curve could also use a little smoothing, i felt myself getting a little bored before the transition to lvl 2, but a bit overwhelmed as soon as lvl 2 started.
good insight to make the player hitbox larger than the zone of control from the bullets, stopping you from cheesing the game by hugging the wall.