You are hired (or influenced) to assassinate the High-King. You will become unbelievably wealthy but no one will thank you and you must escape terrible retribution.
In this unforgiving, unfriendly land there are only a very few places you could possibly escape too and live your lives in power and luxury. All of them are very hard to reach.A vaste expanse of icy tundra peopled by small hardy communities. You begin in the only real civilisation, a group of settled tribes that have built small towns.
They fight each other to keep the natural resources of their lands, trade and religion influence each tribe differently. The only thing that keeps the peace is a simple political system with complex undercurrents.
The High-King and his predecessor maintain the balance of the tribes.