For the dark creeps, they have armor which is resistant to any low damage attacks, so you need to have a decently upgraded tower to be able to hurt them at all. Level 1 and 2 towers arent going to cut through it.
I honestly like this game a lot. It's one of the few games i come back to. I wish the high scores would work so it could put a bit more meaning behind my playing, as i've played it through a few good times. If the game is too big try hitting F11. Good work ch00se. It has a few bugs that I'm sure could/will be worked out but the playability is great imo. 5 stars from me.
It's great fun. But sometimes some idiot will join a room and maybe go afk or something for several minutes. Maybe you could implement a feature to kick someone out who doesnt press play after a while?
Draco, there's a way to turn off the help in the game controls menu. Great game Indie, I like the unique and easy to grasp concept. I'm not particularly a "pink" man, but it works well in this game :). I like the colors and graphics a lot. 5 stars.