Serious Sam: Siberian Mayhem achievements

3.15%

Extreme Survivalist

Get a gold medal on any survival level

3.94%

Superior Species

Get any medal on Kleer Fortress survival level

3.94%

Here Comes the Pain

Get any medal on Castle of Pain survival level

3.94%

Massacre Party

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

3.94%

Feng Shui Fight

Get any medal on Dragon Gates survival level

4.72%

Old School

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

4.72%

Aurora Borealis

Get any medal on The Snowrider survival level

4.72%

Welcome to the Jungle

Get any medal on Monkey Canyon survival level

4.72%

Combustion Tamer

Kill 30 enemies while riding one Draconian Burner

4.72%

Veni, Vidi, Vici

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

5.51%

Hero-glyphic

Get any medal on Horus Sanctuary survival level

5.51%

No Stone Unturned

Find all secrets