The Temple - Deserters | Side quests Lords of the Fallen Guide

After you exit the Temple talk to the deserters.

You encounter the Deserters [M3,8] during your initial stay at the Temple, After you defeat the Infiltrator. Talk to them and give a health potion to one of them (500EXP, the maximum capacity decreased by 1). Also, promise that you clear the tower (Western Antechamber). Inside there, you are going to fight a Mutant, Hell Hound and a Forger with a crossbow. After you do that, return to the deserters - you will receive 500EXP more and the Defender dagger.

After the conversation, the wounded soldier drops a Human Tattoo.

At the portal exit (the return to Keystone) you will encounter a wounded soldier [M3,32] - after the conversation with him, remember to collect the Human Tattoo. You continue the quest after you visit the Citadel - there, the Captain [M3,1] asks you to kill the Deserters.

You encounter the Deserters again in the Western Antechamber.

After you visit the Temple again, go to the Western Antechamber, to talk to the Deserters again [M3,35]. You can do either of two things:

Send the Deserters out to the arena - the Deserters attack the Protector, but they die in battle. You will be able to pick up the two tattoos, from the arena, later on and the boss starts the battle with a lower supply of health. You receive 2000EXP.

Have the Deserters flee for their lives - you receive 2 Human Tattoos, 2000EXP and the Amulet of the Traitor (stronger attacks that, sometimes, drain your health).

The Captain gives you the final reward.

Regardless of your choice, and of whether the Deserters flee the tower, you will pick up the two Tattoos from the ground. With 5 Human Tattoos, you can return to the Captain [M3,1] - after you return to him the proof of the Deserters' death, you receive 1000EXP and the Great Burden (an trinket, charges of some of the opponents do not stun Harkyn).