Castlevania: Lords of Shadow 2 Save Game Location
Windows
Castlevania: Lords of Shadow 2 save games can be found on Windows here:
C:\Users\[user_name]\Documents\MercurySteam\Castlevania Lords of Shadow 2\[user_id]\
Linux
Castlevania: Lords of Shadow 2 save games can be found on Linux (Proton) here:
~/.steam/steam/userdata/[user_id]/239250