Sink the Horror Electric

Complete Quake Episode 1: Dimension of the Doomed in single player.

15 Gamerscore

Bottom of the Well

Complete Quake Episode 2: The Realm of Black Magic in single player.

15 Gamerscore

Beneath the Blue Chambers

Complete Quake Episode 3: The Netherworld in single player.

15 Gamerscore

The Last Unexplored Path

Complete Quake Episode 4: The Elder World in single player.

15 Gamerscore

Indigestion

Defeat Shub-Niggurath in single player.

15 Gamerscore

Gateway Traveller

Complete Scourge of Armagon Episode 1: Fortress of the Dead in single player.

15 Gamerscore

Dominated Dominion

Complete Scourge of Armagon Episode 2: Dominion of Darkness in single player.

15 Gamerscore

Arma-gone

Complete Scourge of Armagon Episode 3: The Rift in single player.

15 Gamerscore

Overlord Overdone

Complete Dissolution of Eternity Episode 1: Hell's Fortress in single player.

15 Gamerscore

Dragonslayer

Complete Dissolution of Eternity Episode 2: The Corridors of Time in single player.

15 Gamerscore

The Year Zero

Complete Dimension of the Past in single player.

15 Gamerscore

Vengeance Denied

Complete Dimension of the Machine in single player.

15 Gamerscore

Vertical Vengeance

Find the secret exit in Quake Episode 1: Dimension of the Doomed.

15 Gamerscore

Nevermore

Find the secret exit in Quake Episode 2: The Realm of Black Magic.

15 Gamerscore

The Hot And Winding Road

Find the secret exit in Quake Episode 3: The Netherworld.

15 Gamerscore

Into Sandy's City

Find the secret exit in Quake Episode 4: The Elder World.

15 Gamerscore

Military Complex

Find the secret exit in Scourge of Armagon Episode 1: Fortress of the Dead.

15 Gamerscore

The Gremlin's Domain

Find the secret exit in Scourge of Armagon Episode 2: Dominion of Darkness.

15 Gamerscore

A Long Yard

Find the secret exit in Scourge of Armagon Episode 3: The Rift.

15 Gamerscore

The House of Doom

Find the secret exit in Dimension of the Past.

15 Gamerscore

Sandy's Room

Find the secret exit in Dimension of the Machine.

15 Gamerscore

Secret Sleuth

Find a secret area.

15 Gamerscore

The Well of Wishes

Find the Well of Wishes in the Crypt of Decay.

30 Gamerscore

You're not supposed to be here!

Find the secret message in Tur Torment.

30 Gamerscore

Friendly Fire

Kill a monster with another monster's attack.

30 Gamerscore

Discharge

In deathmatch, electrocute an enemy in water without dying.

30 Gamerscore

The Shambler Dance

Kill a shambler before it is able to cast its lightning attack.

30 Gamerscore

A Close Shave

Kill a shambler with an axe.

30 Gamerscore

The Painless Maze

Complete E4M6: The Pain Maze on Nightmare without taking damage.

30 Gamerscore

Slipgate Pacifist

Complete E1M1: The Slipgate Complex on Nightmare without firing a shot.

30 Gamerscore

Shub's Bud

Complete Quake on Nightmare in single player.

86 Gamerscore

Scourge Done Slick

Complete Scourge of Armagon on Nightmare in single player.

86 Gamerscore

Rogue Ranger

Complete Dissolution of Eternity on Nightmare in single player.

86 Gamerscore

Otherworldly

Complete Dimension of the Past on Nightmare in single player.

86 Gamerscore

Machinehead

Complete Dimension of the Machine on Nightmare in single player.

86 Gamerscore