Serious Sam 4
54 Achievements
15-20h
GOG
This Seems Safe
Unlock a S.A.M.
44.7%
How to unlock the This Seems Safe achievement in Serious Sam 4 - Definitive Guide
This achievement isn't missable and can be unlocked on the mission death from below after activated a cutscene, and then assigning your first skill point. You can also use this video for reference, all credit goes to clumsy catbird.