Serious Sam: Siberian Mayhem achievements

3.12%

Extreme Survivalist

Get a gold medal on any survival level

3.91%

Superior Species

Get any medal on Kleer Fortress survival level

3.91%

Massacre Party

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

3.91%

Here Comes the Pain

Get any medal on Castle of Pain survival level

3.91%

Feng Shui Fight

Get any medal on Dragon Gates survival level

4.69%

Aurora Borealis

Get any medal on The Snowrider survival level

4.69%

Veni, Vidi, Vici

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

4.69%

Welcome to the Jungle

Get any medal on Monkey Canyon survival level

4.69%

Old School

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

4.69%

Combustion Tamer

Kill 30 enemies while riding one Draconian Burner

5.47%

Hero-glyphic

Get any medal on Horus Sanctuary survival level

5.47%

No Stone Unturned

Find all secrets