NU best build for 2h is depending on weapon if you are going to rely on longsword and retire immediately at 31 then
18-21
Attribute points:0
Strength:18-
Agility:21-
Weapon points:500
One Handed:1+
Two Handed:1+
Polearm:1+
Throwing:1+
Crossbow:1+
Archery:1+
Skill points:0
Weapon Master:5-
Athletics:7-
Riding:0
Iron Flesh:5-
Shield:0
Horse Archery:0
Power Strike:6-
Power Draw:0
Power Throw:0
If your going to use something like a danish or longer i would do the opposite 21-18 and get 6 ath and 7 ps
I have used both these builds, and for me i like reaching lvl 32 so i can play out my level 31 build and in that case i would go 21-21 7 ps 7 ath 4 wm 2 if. but all opinion, but the longsword is not a long weapon so the extra 1 athletics is good. But i would never do 21-15 with a longsword.