Episode 5: Secrets Uncovered introduces two new characters into the fold - messrs Quint Cetcham and Keith Lumley, AKA Jackass and Grinder - taking us on a brief but chilly tour of the airbase that Chris and Jessica uncovered near the start of the game in search for a lost item.
Search the hideout
Once the cutscene ends, you'll find yourself deep in the bowels of the airbase, in control of Keith. Unlike our other chums, Keith comes fully loaded with weapons at the start of the mission - you've got a handgun, a shotgun, and a machine gun in your stash, alongside dual machetes for melee attacks. Use them well.
Make your way down the steps ahead then follow the corridor around, passing through the door on the right when you reach the impasse. Swipe the green herb and ammo, then proceed back out into the corridor via the second door. You'll emerge on the other side of the blockade.
Take a right and follow the passage along, making your way down the steps when you reach them. Shortly, you'll spot a shelf directly ahead. Swipe the ammo and make a note of the locked door to the right, at the end of the corridor.
You'll need to find a way to unlock the doors before you can proceed so, for now, turn to face the door on the left and interact with the sealed panel on the wall nearby. As is now customary, you'll need a screwdriver to open it - but Quint apparently dropped his at the start of the mission. Time to backtrack a little!
Retrace your steps up the stairs, into the room on the left, the out again on the other side. Back in the corridor, immediately look west and you'll spot a shelf containing a bunch of cardboard boxes with an overturned bucket at its base. Bring out your scanner and scan the bucket to reveal the SCREWDRIVER. Grab it then return to the sealed door panel.
Interact with the door panel and solve the puzzle in the usual way - uncrossing the wires and plopping the circular nodes on the illuminated dots on the circuit board. Once that's done, head on through the newly opened door.
You'll find yourself in a small security room. First, take the hand grenade, then interact with the control panel to trigger a cutscene and open the door at the end of the corridor outside.
Search for the Lost Item
Once the cinematic is over, leave the room and head through the newly unlocked door to the south. Immediately upon turning right, you'll spot a projector screen on the east wall. Descend the steps and scan the lower righthand corner of the screen to reveal Handprint 19.
With that taken care of, scour the room to secure the ammo and hand grenades from the table and lockers. You'll also find the Manifesto document on the table if you fancy a gander. Finally, scan the ground between the table and the shelves, up against the raised floor, to reveal the SECURITY TOKEN. Once it's in your possession, the sequence will end.
Next you will search for the engine room as you return to Jill and Parker.