Is there a game that accurately simulated how much constant violence/danger/combat

I believe that Unknown Armies does that.

>>54911290

Unknown Armies, Nemesis (One Roll Engine but with the Stress Meters from Unknown Armies).

Trail of Cthulhu gives you a big Sanity hit if you kill someone. So yeah.

>>54911290
Yes, Unknown Armies has a sanity meter specifically for Violence.

>>54911290
some people just think of violence as a way of life.

>>54911290
Rogue Trader has Insanity and Corruption which can be gained from fighting certain enemies or at the GMs discretion

>>54911290
In WFRP, each critical hit you suffer makes you gain an insanity point.

Let the players interact with the local civilian population and see if they realise how quickly they're ruining relationships or burning the towns down.

Have normal, everyday NPCs with families to support and friends around them for the PCs to interact with.

Have a civvie NPC accompany the PCs for an adventure and witness how cutthroat the PCs get; let the NPC's mind break in some way or let them get corrupted into the murderhobo life.