duel with players, when sending duel request to them.
Right click on player and select duel.

When player will accept Duel request. Stakes UI is opened.
There you can set Duel rules and stakes. Winner will get stakes.
Open PvP map.
Called No man's land.

How to get there ?
Entrance is located at south-west of narwa.
Anything else i should know ?
1. Open PvP map has risk levels. Meaning, going further from entrance, that higher levels players may attack you.
Like player level 50 is at risk 10. Players from 40-60 can fight with him/her.
2. After killing players, loots are gathered from Loot Master

When you get killed before reaching to loot master, everything there will get transferred to player who killed you.