Just some bad dispel rolls on my part, throwing 4 dice at about an 18 with a level 3 caster and failing. Most of the times it wound up with 10 power dice for him, and 6 dispel for me, so I just wouldn't have the dice to take care of everything.
I had some fun Warpfire Thrower shots and a few truly awesome Warp Lightning Cannon shots though!
More than anything, I learned a lot from the game and still had a lot of fun with it! Nothing like a last turn level 1 Warlock Engineer putting 6 dice at Warp Lightning (5+ to cast) in the hopes of getting double 6s, and throwing 8 bolts out (from the condenser on him) and killing a lot of Chaos Warriors.
Of course, the detonation killed off 8 Clanrats, but hey, what can you do.