Above: All emblems from chapter 5
Emblem 1: As soon as you get your weapons back, head into the room in which the chapter began. Check the upper corner for an emblem.
Emblem 2: After taking the elevator up and into the next room, head left down the hallway (away from your objective). In the room you find, there’s an emblem inside a glass case. You can also grab this on your way back onto the elevator after having recharged the battery to 50%, but you’ll have some bogeys on your tail at that point.
Emblem 3: Once Ustanak starts chasing you again, you’ll end up stopping and doing a round of battle with him on the lower circular catwalk structure of the lava room. Run to the rear right of the ring and look for this emblem on a column.
Emblem 4: After leaving the lava room, you’ll be in a hallway. At the end of the hallway, turn right. The emblem is right there, but since you're unarmed, you’ll have to use your melee skills to break it.