Originally Posted by iNf3Rn0 Lan
Anarchy's Executioner - 40
Defeat all the bosses with your Killer Weapon. (Campaign Mode)
This requires you to defeat every boss with a killer weapon (
versions both work). You will know it counts towards the achievement if you get the Overkill! +10000
Does anyone know if this is obtainable through chapter select? I missed two of these during the playthrough and went back to get them and no achievement.