The catch for this one was that you had to take one of everything form the Force Organization Chart before you could take a second one, so no maxing out on an overpowered unit.
I cut down the Eldar in an objective based scenario that had night fight. So I was saved from a lot of nasty firepower. My Whirlwind was instrumental in breaking their fighting force, it missed only once!
Second round was a scenario where I was surrounded by Imperial Guard, I was hammered badly due to lack of cover and I was soundly beaten, but the opponent had to leave, so I went through regardless.
Third round was against another Guard army, but vehicle heavy: My bike squad and my brilliant Ironclad managed to knock out the two Demolishers and Sentinels before they could do significant damage, removing the infantry wasn't too hard, though their company commander passed seven cover saves, but did a suicidal charge against a full strength tactical squad. XD
The whirlwind missed just about every single time in that match, until I borrowed someone's lucky scatter dice and got a resounding hit and crippled his reeling infantry.
Fourth game was the final one, a Chaos Space Marine army of Deathguard, Typhus, Plauge Marines, three Spawns and a Defiler.
The spawns took the right flank and worked their way forwards, under fire from my Tactical Squad and Whirlwind, they eventually made it into close combat, but already weakened from the shooting, so I was able to finish them off in two rounds of combat.
Meanwhile, my Captain and his Bike Squad advanced up the other flank with my Ironclad. The Ironclad took on the Defiler in close combat and in a couple of rounds, tore it to pieces and watched it explode in a shower of putrid flesh and metal. Meanwhile, my Bike squad charge Typhus and his Plague Marines, steadily dishing out damage and taking some too, but ultimately prevailing.
With all foes crushed,victory was mine!
See my scraps for more photos.
Seldom do the dice gods favour me so.