This was such a frustrating battle.
Right from the off when I tried to retain with the Revenants and failed, rerolled, failed. They were going to take out the Manticores. Instead the Manticores got to fire, damaged the Revenants (critical of course) and broke my AA falcons (because the Revenants hadn't moved they were close enough).
Then the storm troopers double forward and three of them are 30.0000001cm from one of the Revenants, allowing TRC to place his template anywhere on the Revenants, including flinging it right over and behind the forrest to hit stuff the the Valkyries can't even see.
On turn 1 TRC intermingled his Baneblades with the Rough Riders, jet bikes clip, TRC wins roll off and escapes.
Turn 2 TRC intermingles the Baneblades with Storm Troopers, with revenants in support, guardians clip. Storm troopers and valkyries get 7 hits out of 8 and wipe out the guardians.
And each time no baneblades were close enough to fire.
Then there was the Rough Rider, Revenant debacle (which was another combat that went to the second round, and then went horribly bad for me).
Even on the last turn I still had chances to keep in the game. But the two cross eyed artillery shots were Night Spinners 3BP disrupt versus the Manticores (2 hits or 1 hit and a failed save to break) - nothing, and the Void Spinner versus the already 1BM hydras holding my blitz (1 hit to break them) - nothing.
And thats on the back of repeated failures to activate throughout the game.
My fault for playing stupid, poncy Eldars!
