Does this game want's me to fail being "pacifist"? (Phantom Liberty)

I use quickhacks like "System Collapse" alot and it works in a microsecond.

I am now in the PL part where i have to guide Reed through a "maze" from a snipers position. Taking out the guard on "3" for some reason, leads to a 3 second upload of said quickhack, failing in capacitating that guard.

Am i supposed to use the Sniper-Rifle?