from the posts i've been reading, i think people are overestimating the power of strength. it only gives you +damage and lets you carry more stuff. agility gives you damage (less than str), accuracy and evasion. I would rather pump agility than strength. notice in the demo your slashing damage still goes up when you pump agility! unless this is a glitch, agil is way better than str. i'd rather do consistently less damage than be a powerhouse that can't hit anything

i say for melee:
-leave str at 1
-pump agil + con
-pump spd for init when needed
-pump surv for regen/luck when needed, but this stat doesn't look too important to me