The game gets really engaging with the second level thanks to the weapon variety and the large amount of enemies, nice job ! Some improvements I would suggest if you were to continue working on this:
- The game speed felt a bit slow to me, from the speed at which the character moves, to the weapon reload time; although it could be my computer which isn't too powerful
- Some sounds effects when you hit enemies would make the shooting feel even better !
- There's no title on the tiltle screen ? x)
Overall, a solid entry !