Serious Sam: Siberian Mayhem

Alpha and Omega

Back To The Future

Rise and levitate

Black Gold

Breaking News

Find all of the print media notes

Here Comes the Pain

Get any medal on Castle of Pain survival level

Combustion Tamer

Kill 30 enemies while riding one Draconian Burner

The End

Critical Temperature

Kill 10 enemies with one Burner explosion

David and Goliath

Defeat Sentry Tower with sole hoverboard firepower

Death from Above

Now it's your turn

Dogs and Frogs

Feng Shui Fight

Get any medal on Dragon Gates survival level

Energize

Everyone Is A Minesweeper

Extremely Uncool

Extreme Survivalist

Get a gold medal on any survival level

Eye for an Eye

Fight Fire with Fire

Kill Draconian Burner with a Burner gun

Part-Time Hero

Get half of all achievements

Hero

Unlock all Achievements.

Hide and Seek

Hole-in-One

Stay here and kill them all... with a black hole

Hero-glyphic

Get any medal on Horus Sanctuary survival level

Inborn Plumber

All Ingenious is Hard

All Ingenious is Shot

A solution to any problem

All Ingenious is Simple

The smartest man on Earth

Iron Caput

Don't ride the tank - become the tank

Superior Species

Get any medal on Kleer Fortress survival level

Line up, please!

Kill 5 enemies with one Crossbow shot

Look Ma, I'm a Lumberjack!

Complete the mech sequence and kill all big enemies without shooting

Massacre Party

Complete Siberian Mayhem on Serious difficulty in Cooperative with enemy multiplier set to at least x2

Welcome to the Jungle

Get any medal on Monkey Canyon survival level

More Complaints

Find every Dmitry audio and text log

No Stone Unturned

Find all secrets

Ok, And?

Old School

Complete Siberian Mayhem without learning a single S.A.M skill in Singleplayer

Oops, I dropped it

Rid the monster of its misery

The Last Train Departed

Sam The Explorer

Find half of all the secrets

Serious Archaeologist

Serious Mayhem

Complete Siberian Mayhem on Serious difficulty in Singleplayer

Heart of Russia

The Refinery

The Processing

Sweet Kompot

The Dark Tower

The Operator

Aurora Borealis

Get any medal on The Snowrider survival level

Traitor's Tale

Find every General Brand audio log

Veni, Vidi, Vici

Beat the final boss in Singleplayer on Serious difficulty without loading mid-battle savegames