Hey thank you for trying it out!
The red/green monster combination comes from Tom Francis (I made this game following his tutorial), same for the eyes getting bigger. I came up with the blue monster and the different gamemodes for the game. To see the difference between the two games you can take a look at the tutorial version: https://pentadact.itch.io/noxp, or a video of it:
I agree with you about the enemies spawning over your head, that's definitely a problem.
Did you think the blue enemy had too much health? The blue enemy makes the game fun by forcing you to avoid other enemies, but I wasn't sure how much health to give him. The line between fun vs frustrating can be thin. (also they have a small field of view so hiding behind a wall can help, but I could make the field of view smaller)
Did you have the time to test Survive The Red Army? in this one the enemies are already spawned, there are only the orange ones and there's 3 types of them; some faster some slower.
For the flashlight mode: thanks! I was thinking about adding 2 other versions: One where you don't have any weapon, where have to avoid the orange ones and reach the exit.
The second one would be similar but you keep the blue gun, and you have to eliminate all the orange ones by feeding them to the green one, but in the dark.
Thank you for trying the game!