The following information was taken from a screenshot. The skill book belonged to a 21st level warrior, so we know that (currently) these skills will all be 21st level or below.
Of course, it's all subject to change... but any information is nice
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Furious Blow - A powerful attack that deals large amounts of damage and can cause you to enter a rage, which increases your overall damage for a short period of time.
Knee Breaker - A basic kicking attack that has a chance to interrupt the opponent.
Rending Strike - A powerful attack that deals large amounts of damage and can cleave the armor of your opponent, reducing his armor class for a short time. This attack can also induce weaknesses that can be exploited by your allies.
Twin Fires - This is a moderately powerful attack when executed under normal circumstances. If executed while an ally is in flanking position additional damage is done and the target is weakened against certain attacks.
Looks great to me! I like the fact that some of the attacks have a small debuff associated with them. Even better, some attacks are more powerful based on your ALLIES location! Combat is going to be a lot more involved and strategic than we've seen in the past, and I couldn't be happier about it
Any thoughts on the skills?