Guerrilla is a more advanced Horde mode; think Gears of War 3, rather than Gears of War 2. This is indicated in the ability to earn points you can spend on defences:
Radar – extend cross-com sensory data.
Invisibility – grants player active camo even when running/standing.
Missile – target a location for a precision missile attack.
Turret – place a defensive gun battery.
Air Strike – wreak havoc on a wide area of land.
You may want to spend all your bonus points immediately, but with regular boss waves, you may be best saving them for when they are really needed.
One piece of campaign news that Game Rant did discover is that there is no matchmaking, so having friends online is a must - and what better way to make such friends, but by heading over to our forums? Now less than two months away, Future Soldier is fast becoming a game to watch out for. Ghost Recon Future Soldier's Guerrilla Mode appears to be icing on an already delicious looking co-op cake.
Source: Gamerant.com