You were a sniper for Overwatch...well, at least until they left you to die. Gabriel was supposed to finally end your life, but instead...he more or less took you under his wing

Now here you are, a sniper for Talon... and a damn good one at that. Gabriel and you are on a mission again... while he outsmarts the guards with his phantom form, you stay under the cover of darkness as usual and watch the whole thing through the scope of your sniper rifle