Freedom Fighters: Guerilla can begin if its that easy[/sarcasm]
heres my idea- id make it myself, but it took me three solid days to make a cheap 2D "shoot down aliens" thing, which i cant make now because EA stole it. its there flagship product at E3[/EA mocking]
did anyone ever play freedom fighters [http://en.wikipedia.org/wiki/Freedom_Fighters_%28video_game%29]? that game ruled as guerilla warfare. you stole c4 from an enemy armoury, blew up helicopters with it to ease the air support over the prison, where you bust out some allies to help the cause!
the concept is thus:
enemy country has attacked, and has captured your local county, complete with mountains, lakes, fields, sewers, everything. you and some friends with some organisation skills decide to set up a counter offensive
you pick your starting location, field, sewers, mountain, etc. there are advantages to each, e.g. food supplies, water, defensible, easy to vacate, faster attacks on enemy, etc. you do missions that attract attention of the local populace and invading forces. the more attention you have, the more people you get, but the more attackers are sent your way. you can stay and fight, but risk losing everything, or vacate your base, which takes more time the bigger your base is.
you can blow up an armoury, which will lessen the enemy equipment, or steal from it so you can do so again later. you can break allies out of prisons. you can attack enemy propoganda centres. slowly change from a guy with a pistol and a grenade ambushing a runner on a bike, to a force dozens of people strong.
please someone make this game, it would be far better then the red faction guerilla, which lost credibility when the resistance werent even hiding, just sitting in a base