Alliant : Gamerfish – Play Free Online Flash Games
Battle the imposing alien force by managing your army and destroying their base as you travel from colony to colony. Build barracks, defensive turrets, and deploy troops to take on the enemy.

Gamasutra: Greg McClanahan’s Blog – Achievement Design 101
In June of 2007, I was tasked with creating site-wide achievements in user-submitted Flash games on Kongregate. I was forced to ask myself, "If I hate common achievement design so much, how would I do it?"