Suggestions for a melee TWF DPS multiclass build??

[CThruTheEgo]

Yes, I agree you have to go through the weapon group specialization tree to get keen edge, along with the IC crit, however, there is no greater weapon focus (feat)requirement in this tree, only enhancement tree requirements. You just have to pick a kensai focus for the weapon of choice (heavy blades etc., and of course exotic in tier one if youre using bs, or kopesch etc)... I see absolutely no requirement for feats as it used to be before the enhancement pass.

This is not correct. Kensai weapon specialization tiers 2, 3, and 4 require weapon focus, weapon specialization, and greater weapon focus respectively. I am looking at my pure fighter's enhancements in game right now.

I do notice that the feat requirements are specific to the chosen weapon group. So, for example, my fighter specializes in axes and the feat requirements specifically say weapon focus slash (for one and two handed melee axes) or weapon focus thrown (for throwing axes). So it might be the case that the feat requirements don't appear until you actually select the enhancement or maybe the initial weapon group. I don't know, I'm not going to bother resetting my enhancements to find out. But they do require the feats.

[Aglabac]

Could this build be used for a Ranger PL?
I like 2wf with khopesh, evasion and monk

[Irenae]

That's fairly easy, 2 rogue and 18 Ranger going Tempest is a 2 weapon powerhouse. You gain TWF feats automatically as well, freeing up feat slots.