If you're gonna use a Sword, max Blazing then Sword mastery. If you're gonna use axe Max Smite then Axe Mastery. (At level 25 then 30)
Protection and Pan barrier are useless as you wont use shield after level 60 and you can't cast em.
Empower weapon is really useful in later levels. Sneaker is...fun...nothing else (more fun in PK server ^^). And from the attack skills, Guillotine is the strongest, but the combos are useful if you'll make a knight (1v1), or against hard-to-hit people like Acros who have like 99999 DEX.
Personally on blades i max Blazing/Smite -> Mastery -> Empower -> Berserk then use the rest of the points for fun. (all other skills are useless for STR blades)
And on knight....you're probably going aoe so only those 3 again.