Blood: Refreshed Supply™

Chosen-in-Regress

Defeat the 3 Beasts of Beauty and the Beast (E6M8) in under 3 minutes on Well Done difficulty or above

Watch out for Pedestrians

Complete Ghost Town (E3M1) without any Innocents getting killed

I'm Not Staying in This Freaking House Another Second

Complete The Haunting (E2M5) in under 40 seconds

So Forgotten That They're Still Full of Cultists

Find the secret level in Post Mortem

The Legend...

Find the secret level in Cryptic Passage

The Nightmare Ends

Complete Cryptic Passage

Better Left Buried

Find the secret level in Farewell to Arms

Shopping Spree!

Find the secret level in Dead Reckoning

Priest, Beast, Deceased

Complete Post Mortem

Should Have Gone to the Beach

Find the secret level in Even Death May Die

Thine Is the Kingdom

Complete Dead Reckoning

Oh My God... You're Rabid!?

Exploit the Hellhound's greatest weakness

Rest in Pieces

Complete Farewell to Arms

Forgive Me, Old Friend

Complete Even Death May Die

Digestive Irritant

Find the secret level in The Way of All Flesh

I Die... Again

Kill yourself 10 times in single-player

Sleep, Ophelia

Complete The Way of All Flesh

Beneath the Floorboards

Find a super secret

Swallow This

Kill a Choking Hand

Maranax MaranAAAHHHHHH

Kill 100 Cultists