Good, but there should be more upgrades for each weapon like damage, bullet speed, firing rate... BTW, "demage" should be "damage" Oh and you should be able to buy auto-turrets. 3/5
@ xapocalypticx - Don't be so hasty :) Read the description. They can be very useful...
Oh and, I say there should be a permanent 1.5x EXP Weekends :) (Or at least Mondays or something, to cheer people up lol)
Best combo = half and half marines and mortars fully upgraded. Marines take advantage in odd numbers (7 units = 4 marines 3 mortars) Don't upgrade anything else lol :D