"Gate Keepers" is the sixth mission of Crysis 2.
Gould leads Alcatraz to the CELL Nanotech Facility but finds it on lockdown. He suggests creating an explosive diversion to draw the CELL troops away from the facility. Alcatraz then fights his way through CELL operatives with every intention of detonating CELL equipment to cause the CELL to focus on his location. When Alcatraz is on his way to the CELL Nanotech Facility, for the second time he meets the Ceph, he adjusts his Nanosuit 2 for the fight with Ceph and CELL. Alcatraz makes his way through the CELL LGVs and CELL soldiers to the building that leads to the cathedrale, where Alcatraz creates a special diversion for Nathan Gould to sneak in to the CELL Nanotech Facility. Alcatraz disables security of the seawers beneath the Cathedra where he sights a most powerful version of Ceph, that can cloak. Alcatraz makes his way to the building we see in the opening for the chapter Second Chance while CELL are checking the damage after explosions that Alcatraz have set off.
- Ceph Guardian Unit makes it's debut and is briefly seen at the end of level.
See: Gate Keepers/Gallery