Starcraft Fortress

Changelog 0.2 - 0.3 -Increased minimum/maximum time between waves. (should give you some more time to fortify up) -Added a choice between 3 difficulty levels -In theory supports 2 players, but havent been able to test this. -Slightly reduced the rate for wich "factor" increases. (determines the amount of units created per second). -Tuning, balancing, preparing for 4-player support.