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Are You Serious?

Complete the game in single player on unmodified serious difficulty.

Bird Hunter

Kill 20 Harpies with the Sniper rifle.

Burn Baby, Burn

Burn 100 enemies to death.

Co-op Beginner

Complete any level in co-op.

Co-op Survivor

Earn a gold medal on any level in cooperative Survival.

Crunchy

Kill 100 Kleers with the Cannon.

Fragger

Frag a total of 100 players.

Look, it's a secret!

Find at least 10 secrets in single player.

Look Ma, I'm a Lumberjack!

Look Ma, I won!

Win a versus match.

Make it count

Kill at least 30 enemies with a single Serious Bomb.

Medieval Master

Complete the Medieval episode in single player or cooperative.

Mine's bigger than yours

Destroy an enemy cannon with your own cannon.

Nice Try

Persia Master

Complete the Persia episode in single player or cooperative.

Rrrrrrrrrr

Kill 10 enemies with the Chainsaw without releasing the trigger.

Serious Beginner

Complete any level in single player.

Serious Damage

Kill 100 enemies with Serious Damage active.

Serious Run

Complete the game in single player by beating the estimated time on each level.

Serious Sam

Complete the game.

South America Master

Complete the South America episode in single player or cooperative.

Space Marine

Kill 200 enemies with the Laser gun.

Survivor

Earn a gold medal on any level in single player Survival.

The Beast

Finish the Legend of the Beast campaign in single player or cooperative.

The Perfect Storm

Treasure Diving

Find a secret under water.

Trick or Treat

Kill 50 Cucurbitos.

Wall of Bullets

Kill 20 enemies with the Minigun without releasing the trigger.