Unlock the Sniper.
Unlock the Ninja.
Unlock the Vanguard.
Unlock the Viking.
Unlock the Pirate
Master the Brawler by defeating every Skull Ritual as him, solo.
Master the Warrior by defeating every Skull Ritual as her, solo.
Master the Sniper by defeating every Skull Ritual as her, solo.
Master the Ninja by defeating every Skull Ritual as him, solo.
Master the Vanguard by defeating every Skull Ritual as him, solo.
Master the Viking by defeating every Skull Ritual as him, solo.
Master the Pirate by defeating every Skull Ritual as him, solo.
Have four players at once!
Defeat every Ritual.
Unlock every character!
Achieve true mastery by defeating every Skull Ritual as every character, solo.
Unlock the Rocketeer.
Master the Rocketeer by defeating every Skull Ritual as him, solo.
Unlock the Gunslinger.
Master the Gunslinger by defeating every Skull Ritual as him, solo.
Unlock the Occultist.
Unlock the Crusader.
Master the Crusader by defeating every Skull Ritual as him, solo.
Master the Occultist by defeating every Skull Ritual as her, solo.
Slay the Tunnel Ghoul.
Slay the Tunnel Ghoul solo without dying!
Slay the Corpse Queen.
Slay the Corpse Queen solo without dying!
Destroy the Death Dancer.
Destroy the Death Dancer solo without dying!
Slay the Vicar.
Slay the Vicar solo without dying!
Slay the Swordmaster.
Slay the Swordmaster solo without dying.
Unlock every gear option for every character.
Unlock every outfit for every character.
Unlock the Slayer.
Master the Slayer by defeating every Skull Ritual as her, solo.