The warrior skills multi-attack and multi attack distance are broken. (Also there's a typo, one is written as "multi-attack" while the other one is "multi attack")
Putting additional points into those skills does absolutely nothing. I've got both skills maxed, and although it says I can hit 6 targets, I can never hit more than two. Also the chain range does nothing, it only hits two enemies if BOTH of them are in your regular weapon reach.