My other option was to place landmines on their likely paths, but that requires that they actually walk over them.
Edited:
It really is, unless you're shooting right next to a stalker's friend they'll just be freaked out. I remember eliminating Freedom reinforcement snipers with that crossbow. The soldiers on the ground weren't even alerted.
The ammo is relatively cheap and efficient, killing just about anything in one headshot.
Also, stream is over since nobody is watching :ohdear:
Eeexcellent. Gonna give it a whirl now, with the killing of whoever comes after Fiend in Sid's hitlist.