Complete Level 01.
Complete Level 02.
Complete Level 03.
Complete Level 04.
Complete Level 05.
Complete Level 06.
Complete Level 07.
Complete Level 08.
Complete Level 09.
Complete Level 10.
Complete Level 11.
Complete Level 12.
Complete Level 13.
Complete Level 14.
Complete Level 15.
Complete Level 16.
Complete Level 17.
Complete Level 18.
Complete Level 19.
Find all secrets in Level 01.
Find all secrets in Level 02.
Find all secrets in Level 03.
Find all secrets in Level 04.
Find all secrets in Level 05.
Find all secrets in Level 06.
Find all secrets in Level 07.
Find all secrets in Level 08.
Find all secrets in Level 09.
Find all secrets in Level 10.
Find all secrets in Level 11.
Find all secrets in Level 12.
Find all secrets in Level 13.
Find all secrets in Level 14.
Find all secrets in Level 15.
Find all secrets in Level 16.
Find all secrets in Level 17.
Find all secrets in Level 18.
Find all secrets in Level 19.
Kill all enemies in Level 01 on Hard.
Kill all enemies in Level 02 on Hard.
Kill all enemies in Level 03 on Hard.
Kill all enemies in Level 04 on Hard.
Kill all enemies in Level 05 on Hard.
Kill all enemies in Level 06 on Hard.
Kill all enemies in Level 07 on Hard.
Kill all enemies in Level 08 on Hard.
Kill all enemies in Level 09 on Hard.
Kill all enemies in Level 10 on Hard.
Kill all enemies in Level 11 on Hard.
Kill all enemies in Level 12 on Hard.
Kill all enemies in Level 13 on Hard.
Kill all enemies in Level 14 on Hard.
Kill all enemies in Level 15 on Hard.
Kill all enemies in Level 16 on Hard.
Kill all enemies in Level 17 on Hard.
Kill all enemies in Level 18 on Hard.
Kill all enemies in Level 19 on Hard.
Kill all enemies in the secret level.
Get the Shotgun (won't trigger if you got it using passwords).
Get the Super Shotgun (won't trigger if you got it using passwords).
Get the Machine Gun (won't trigger if you got it using passwords).
Get the Chain Gun (won't trigger if you got it using passwords).
Get the Grenade Launcher (won't trigger if you got it using passwords).
Get the Rocket Launcher (won't trigger if you got it using passwords).
Get the Hyperblaster (won't trigger if you got it using passwords).
Get the Railgun (won't trigger if you got it using passwords).
Get the BGF10K (won't trigger if you got it using passwords).
Complete the first planet (Maps 1-4) using only the Blaster, without dying, and with crosshair and status bar off.
Complete the first map using only the Blaster, on Hard, with 100% kills and without getting harmed once.