TL;DR 1944, Finnish gold prospector (and Winter War veteran) hits a motherlode, has it taken by authoritarian occupiers (a platoon of Nazi troops), recovers said property by satisfyingly violent means

Just watched it yesterday. Think of John Wick's Finnish grandfather.
I'd imagine his character is partially based on Simo Häyhä AKA The White Death. The Jäger/sniper that killed 500+ Soviet troops during the Winter War.