Stronghold is a side mission in Infamous 2.
The mission starts when Laroche calls Cole and informs him that he has discovered a Militia base. Cole follows a convoy of Rebel trucks to said base and join them in their attack. Once there Laroche tells the men Cole is in position and instantly attack the base during the battle a helicopter arrives making the battle more difficult but with the Rebels help Cole is eventually able to overpower the militia destroying the Militas base and clearing them from another section of Ascension Parish
Upon completion, Cole receives 100 XP and slightly reduces enemy activity in New Marais.