discord, strife (noun)
lack of agreement or harmony
bitter conflict; heated often violent dissension
Violent conflict, usually brief or limited in nature.
Strife is a first-person shooter video game developed by Rogue Entertainment and published by Velocity, based on the Doom engine from id Software. Strife added some role-playing game elements and allowed players to talk to other characters in the game's world. Along with Pathways into Darkness, Ultima Underworld and System Shock, it is considered one of the first FPS-RPG games.