Discover the Bliss (Solo Campaign only).

Use the chainsaw to kill 20 enemies in DOOM 3

Destroy a cult water treatment pump and make them thirst for revenge (Solo Campaign only).

Detected 25 hidden things.

Keep a Sentry Bot alive to its destination in DOOM 3, RoE, or Lost Mission (except Mars City)

Kill the scientist trapped next to the Reactor Control Room in DOOM 3

Repaired a piece of equipment.

Acquire all rare weapons.

Wipe your Gas Mask 20 times.

Reach "The Dark Lord" ending.

Acquire all pyromancies.

Acquire best wpn through raw reinfrc.

Acquire best wpn through lightning reinfrc.