Hello. I am going for the same class as you. I have mostly put my stats on DEX and STR. I am now at Lv64. I am maintaining a 20 points difference between the two with DEX having the highest value. Still experimenting for the moment. I haven’t put any points on CON; doing well so far.
Regarding my skill build:
For Swordsman Rank1; I did not put anything on Restraint. I think I don’t need the resistance for knockback/stagger because I think the high DEX allows for dodging attacks most of the time. So, I have Max Bash, Max Gung Ho, and Max Concentrate.
For Swordsman Rank 2, and Barbarian Rank 3 and Rank 4; we have the same skills. Cleave and Seism are great for mob control. Helm Chopper and Seism have stun effect; which also compliments with Pommel Beat and Cleave that give additional damage to stunned enemies.
For the Corsair Skills:
The increase in Lv of Jolly Roger only adds to the duration of the buff, so I think it is better to not max it out at Lv10 and just put the other points on a more useful skill. The cooldown is not that long even at low Lv so I could just cast it again if the buff expires.
The attack of Dust Devil at Lv10 is only equal to a Hexen Dropper at Lv5, so I won’t be getting that. I would probably go for Iron Hook + Keel Hauling because Keel Hauling at Lv5 already has 615 Attack.
Still having second thoughts on getting Unlock Chest. Based on the description; I may still need a Key to open a chest. I think the skill Lv only adds additional Lv to your current Key Lv, but I am not really sure. Any idea on this?
And of course, max Double Weapon Assault. I would be relying on my normal attacks more often than my offensive skills so this buff would be very useful. (Also goes for Gung Ho and Concentrate.)