Sker Ritual achievements

Survive a Dark Round without receiving damage

Visit every location in the Sewers of the Dead

Visit every location in the Deadly Lover's Fortress

Visit every location in The Ashes of Sker Hotel

Find all lore notes in The Ashes of Sker Hotel

Rank a gun to max level

Survive Round 35

Escort all Lambs in under 5 minutes

Have all the perks activated at once

Escort the Lamb to slaughter in under 2 minutes

Visit every location in the Curse of Lavernock

Survive Round 20