Setup:
Host Game
Bots - 24 12 per side
Map - Arena
Mode - Deathmatch or TDM
Kingdoms
Nords
Khergit
Nord Scout has weapons for every achievement except blunt.
Khergit have all the weapons except blunt and horse archers to mop up the 100 mounted projectiles quicker.
You can now play at your leisure and work towards the various kills and play the 15 min map out.
I made a video below slowing off an outline of all of them below if needed.