There is a constant flow of enemies defining an ever changing battle line. Work with your team to push the battle line deeper in to enemy territory. Disable all the enemy Spawns to win. You will be paid for any dead enemies. Use this money to buy weapons and friendly spawns.
Screen shots from the Second Level.
Reminds me of Xen for some reason.
omg its so fun! if it were multiplayer it would be like the best mod ever!
8/10