Nice pixel art, I find a little hard to aim to the monsters and get caught when they are a lot but was fun, some sound effects would be nice to, good job!

Pretty good beginner game. Bullet collision didn't work sometimes and I would like to see a score system. But had fun

The controls are very weird, i don't really know how to shot horizontally but it's fine.
The concept of surviving waves is fun, maybe upgrades would have been cool but i understand you didn't have enough time.
Cool game, great work