{Default compliment part}
Good quality for 48h, menu, music vfx etc, nice work. But i have to say about some future trubles (if you will expand project later).
There are things that feel easier to avoid, so player will try get only them like bullet size have more profit cuz they have bigger collider, so enemys more offen touch it, and you still dont need much skill to avoid it. Opposite of this - bullet speed, now you cant be too close from gun, cuz your speed not enoght to evade.
May be you should add score multiplicator for each debuff, that will be falling if player keep getting debuffs with same type. May be with debuffs, give a little player buffs, so player will think "i dont want take this gun perk, but this powerup will outweigh the disadvantage".
*Random gameplay opinion*. Anyway, GL mate.