The Militia have set up a bunch of blockades, take them out!
― Zeke informing Cole about the Militia blockades.
"Checkpoint" is one of three bonus side missions in Infamous 2. It is included in the Sucker Punch Mini-Missions Add-On Content DLC.
The mission starts in front of Subway restaurant in Ville Cochon. Zeke informs Cole that The Militia have set up a series of blockades in the streets of New Marais. Cole has to take out each one.
Upon completion, Cole receives 100 XP. Since this mission is included in Add-On content, finishing it doesn't reduce enemy activity in New Marais.
Cole reaches the Militia blockade.