Ok, nice game
Some thoughts:
Putting pressure on Necrons is the right idea, so that he can't get critical mass, yes. However because of that I kinda dislike Storm Boyz for that since they are a CC unit - Focus Firing becomes important when you wanna wipe out Warrior Squads, since it actually hinders his tech and pretty much everything if he has to replace his warrior squads.
Also, most of the killing was done by the Big Mek, the Stormboyz dont seem very effective vs Warriors pre PoG.
On to the game itself, I think you should have pressured his Lord alot more in the start, or is this totally wrong?
Big Mek in Slugga Squad clearly >>>> NL.
Keep up the good work, I liked the BO actually but sure on how effective it really is
GG!