The game is okay, but it has some flaws.
- after a game over, the game over screen comes up so fast that you can easily press the button that brings you back to the menu if your mouse happened to be in that spot shooting and when that happens, all your progress is lost and you have to start the game again.
- the cutscenes are unskippable, which becomes annoying after having to play the same level over and over when you fail. Please make them skippable because a number of people do not like to wait through story.
- There's not really much skill to the game. In the beginning (after the tutorial), it is just going forward, prompting the enemies to come after you, backing up, and shooting them and then repeating the process with the next group until you reach the end of the area. There's really no strategy or difficulty in that, especially since there is no way to avoid some enemy attacks, like the first big infected you encounter and the mercenaries, where it is near impossible to dodge their gunfire (and it doesn't help that your bullets disappear before hitting the enemy when you try to shoot them off screen, but I'm pretty sure that the mercenaries can shoot you when their off screen.
Still, I do like the graphics, sounds, and music you put into the game. Good luck with your future projects.