When in possession of either the Helghast assault rifle or the shotgun, conceal yourself near funnel-points for maximum effect. The shot-spread pattern is enough to inflict mortal damage on dense groups of opponents. Should the survivors
retreat; chase them with a hand grenade. You can easily knock out entire "clumps" of opponents using only two actions. When in possession of the sniper rifle, you can take snapshots at "clumps" of enemies. The sniper rifle can eliminate multiple opponents that are "standing-in-line" with a single shot.