The Season 2 - Khorne Title update for Warhammer 40,000: Inquisitor - Martyr has 5 achievements worth 270 gamerscore.
Kill Kairn Golgarth, the Voidripper warlord.
Destroy Abraxas, the infamous Chaos Knight.
Kill 1000 Khorne enemies.
Judge Caius Thorn for his disobedience.
Unlock the Agartha Subsector.