Hi,
I finished the game and decided to do some of the leftover quests. To make things easier for me I killed a bunch of generic NPCs and now I am wanted for murder with the Morkons and Berserkers. This makes bounty hunters appear in various parts of the map which is not a big problem because I can dispatch them easily but also some characters refuse to talk to me because I am a murderer. Is there anything I can do about it?

depends on how far you have went killing npcs. Most of the time with crimes you travel to the factions leader who handles crimes and pay your fine and everything is cleared up. So i would try that first, but if your past that point of that working, nothing you can do really.