Scourge: Outbreak achievements

Complete any Level, in any difficulty, using only the Piranha

Complete any Level, in any difficulty, in a 4-player co-op game

Kill 4 enemies simultaneously with an Adhesive Grenade

Kill 10 enemies in a row with the Chimera without dying

Complete all 4 Levels in 'Normal' difficulty mode

Kill 4 enemies simultaneously with the Shockwave Ability

Get the killing blow on the Digger

Get the killing blow on Lilith

Get the killing blow on the Banshee

Kill 10 enemies in a row with the Guardian without dying

Kill 10 enemies in a row with the Piranha without dying

Complete Level 4 in any difficulty mode