OK since I feel like wasting time I think I'll just help the
OP to clarify some things for the rest of us so we get a better idea what happened in this battle
So here are some things I didn't understand quite well
half my scouts being wiped out within the first 2 turns *Darn those chaos dreadnoughts*
What kind of scouts are we talking about? Veterans with the forward sentries doctrine? How many were there?
And how many Dreads were there? Chaos Dreads aren't usually that good at killing infantry at a distance and it's hard to get into close combat in the first 2 turns, so how did they kill all your scouts?
broke though the cultists
Did your enemy field actual cultists with special rules or are you just referring to chaos infantry as cultists?
Mkoll was slamming melta charges silently against all the vehicles he could get to * he single handedly got 3 weapon destroyed resulst 2 immobilised results and 6 Vehicle destroyed results
This means that AFTER all the turns you passed, you played at least another 11 turns just for Mkoll to achieve all those results (since you can only use 1 melta bomb a turn) And that's just considering that he was able to jump from one vehicle to another without losing any time.
MY vast armour regiments then Pounded the advancing lines of chaos marines into dust
What are your vast armor regiments composed of if I may ask?
but only after destroying all of their infantry and armour
Destroyed all the enemy infantry and armor? I have yet to see an apocalypse game that lasts more than 6 turns, but seeing one where one sides annihilates the other one's complete force is amazing, how did you do it and how long did it take? While we're at it, what units did your enemy have?
the real challenge THREE chaos daemons I know right
THREE CHAOS DAEMONS?! Ehm... what kind of daemons are we speaking of? Lesser daemons are not exactly a big danger and even if they were greater daemons then the army you have left at that point is still a lot stronger than those daemons... unless of course these are some forge world daemons I do not know of... please enlighten u.
and my shadowsword baneblade
Ehm... so which one do you have, a shadowsword or a baneblade (or both?)
2vs2 Tanith vs chaos
Who was the other player on your side? You never mention him or anything he does.
So you see, aside from the battle report being written rather vaguely and with happenings that seem extremely unlikely to actually occur in a game of
40k, not having any means to then prove you own this big of an army will leave even the most kind of dakkadakka users skeptic.
Personally I admit that I do, in fact, not believe that you have a 50.000 point imperial guard army, but I'm sure you will post us some very nice pictures to clear all doubt
But I do love your battle report, I thought it was very funny

A good read indeed!