Achievements:
Wanted Dead or Alive
Objective: Rescue professor Stein. So to say.
Serious Beginner
Objective: Complete any level in single player.
Chain Explosion
Objective: Kill at least 5 headless kamikazes in one explosion.
Apprentice Egyptologist
Objective: Decipher an Egyptian text.
Bug Hunt
Objective: Squash 10 Hatchling spiders.
Get the hell off my ride!
Objective: Secure the bird.
Arachnophobia
Objective: Rip 10 Juvenile spiders apart.
All Your Base Are Belong To Us!
Objective: N/A
Ophthalmologist
Objective: Remove 10 Gnaar eyes.
Problem solver
Objective: Solve the riddle of the Sphynx.
Killer Jewelry
Objective: Kill an enemy using the Mutilator.
Kleer Wrestler
Objective: Tear off 10 Kleer heads.
Useful Trophy
Objective: Kill an enemy with a gib torn from another enemy.
Co-op Beginner
Objective: Complete any level in cooperative with at least 2 players.
Painful Divorce
Objective: Kill a Witch-Bride of Achriman.
Bone Crusher
Objective: Smash 20 Kleers with the Sledgehammer.
Scorpion Slayer
Objective: Break 5 Arachnoid necks.
Cardiac Surgeon
Objective: Rip out 10 Rocketeer hearts.
Mission completed
Objective: Power up the Timelock.
Wall of Bullets
Objective: Kill 20 enemies with the Minigun without releasing the trigger.
Trick Shot
Objective: Kill the kicked enemy while it is still in the air.
Clay Pigeons
Objective: Kill 5 Cave Demons while they're in air.
Classic Outfit
Objective: Find Sam's classic outfit
Detroit Steel
Objective: N/A
The doorman should wear a suit
Objective: Awake the Guardian of Time.
Chiropractor
Objective: Break 10 Soldier necks.
Load of Scrap
Objective: Rip Scrapjack's head off.
Up Close and Personal
Objective: Gib 20 enemies from close range with a shotgun.
Rodeo Surfer
Objective: Use the Mutilator to surf after a Werebull.
Kung-fu Fighter
Objective: Perform all possible finishing moves in the game.
Maintenance time
Objective: Blow a Major Biomechanoid into pieces.
Circle of death
Objective: Kill at least 3 enemies in one spinning Sledgehammer attack.
Deathmatch Beginner
Objective: Complete a deathmatch game with at least 1 frag.
Berserker
Objective: Kill 3 enemies in one sprint with the Sledgehammer.
Survivor
Objective: Earn a medal in Survival.
Skewer
Objective: Pierce 5 enemies with one Devastator round.
Serious Sam
Objective: Complete the single player campaign.
Headsman
Objective: Decapitate a Khnum.
Vista
Objective: Find the Vista secret.
Look Ma, I won!
Objective: Win a versus match.
Golden Survivor
Objective: Earn a gold medal in Survival.
Co-op Master
Objective: Complete the campaign in cooperative with at least 2 players.
Look, it's a secret
Objective: Find at least 50 secrets in single player.
Beast Hunter
Objective: Complete a Beast Hunt match
Coin-op Co-op
Objective: Complete a Coin-op cooperative game on normal or higher difficulty.
Instant Killer
Objective: Make at least 3 kills in one Instant Kill match.
Hammer Time
Objective: Frag 20 players with the Sledgehammer.
Flag Thief
Objective: Score a total of 10 points in CTF matches.
Last Man Standing
Objective: Win one round in Last Man Standing game with at least 4 players.
Are You Serious!?
Objective: Complete the game in single player on unmodified serious difficulty.
Deathmatch Master
Objective: Win 10 deathmatch games.
Life Saver
Objective: Pick up at least 10 extra life items.
Heavy Weight Champion
Objective: Win one My Burden match with at least 3 players.
Old School
Objective: Complete the game in single player without manually reloading, aiming or sprinting.
Serious Run
Objective: Complete the game in single player in half the estimated time on each level.
Gold Rush
Objective: Pick up 100 gold coins.
Top Secret
Objective: Find all secrets in single player.
Queen Hatshepsut
Objective: Complete The Guardian of Time in single player on serious difficulty without dying or loading.
Master Egyptologist
Objective: Decipher all Egyptian texts.