Serious Sam HD: The First Encounter achievements
1,565
(350)

Serious Sam HD: The First Encounter

3.6 from 47 votes

There are a maximum of 35 Serious Sam HD: The First Encounter achievements worth 1,565

1,745 tracked gamers have this game, 31 have completed it (1.78%)

Achievement Details

Serious Co-op in Serious Sam HD: The First Encounter

Serious Co-op50

Complete a co-op game on serious difficulty and extra enemy strength on 400%.

  • Unlocked by 69 tracked gamers (4% - TSA Ratio = 5.02) 1,745  
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