Get the Shotgun !
Get the Chainsaw !
Get the Chaingun !
Get the Rocket Launcher !
Get the Plasma Gun !
Get the BFG 9000 !
Finish E1M1.
Finish E1M1 on Ultra-Violence or higher.
Finish E1M1 on Ultra-Violence or higher, in 45 seconds maximum.
Finish E1M2.
Finish E1M2 on Ultra-Violence or higher.
Have 200 Health.
Have 200 Armor.
Have 200 Health and 200 Armor at the same time.
Have 200 Health and 200 Armor at the same time on Ultra-Violence or higher.
Go to E1M4.
Go to E1M4 on Ultra-Violence or higher.
Finish E1M4.
Finish E1M4 on Ultra-Violence or higher.
Find the secret level in the first episode.
Finish E1M5.
Finish E1M5 on Ultra-Violence or higher.
Finish E1M6.
Finish E1M6 on Ultra-Violence or higher.
Finish E1M7.
Finish E1M7 on Ultra-Violence or higher.
Finish E2M1.
Finish E2M1 on Ultra-Violence or higher.
Go to E2M3.
Go to E2M3 on Ultra-Violence or higher.
Find the secret level in the second episode.
Finish E2M3.
Finish E2M3 on Ultra-Violence or higher.
Finish E2M4.
Finish E2M4 on Ultra-Violence or higher.
Finish E2M5.
Finish E2M5 on Ultra-Violence or higher.
Finish E3M1.
Finish E3M1 on Ultra-Violence or higher.
Finish E3M2.
Finish E3M2 on Ultra-Violence or higher.
Finish E3M3.
Finish E3M3 on Ultra-Violence or higher.
Finish E3M4.
Finish E3M4 on Ultra-Violence or higher.
Go to E3M6.
Go to E3M6 on Ultra-Violence or higher.
Find the secret level in the third episode.
Finish E3M6.
Finish E3M6 on Ultra-Violence or higher.
Finish E3M7.
Finish E3M7 on Ultra-Violence or higher.
See the hidden Credits
Obtain max ammo for every weapon in the same time on Ultra-Violence or higher
Complete episode 1 on Nightmare skill level and visit secret level
Complete episode 2 on Nightmare skill level and visit secret level
Complete episode 3 on Nightmare skill level and visit secret level