I'll give you what comes off the top of my head
1.can weild a lightsaber so fast that it looks like it's twent
2.toss star destroyers around, can apparently rip the engins out
3.cut's his way through literally thousands of vong
4.Kills 8 slayers, even though one is usually a match for a master
5.uses his own, more powerful version of force lightning
That's some of the big stuff, but I haven't read all of the NJO, so there could be more.