Faced his army earlier at my local gaming club.
long story short I won’t.
he had no truks this time round but 3 units of two Kans, using the kanwall tactic.
with all that mech I was a bit scared of my lack of heavy, but I moved by assault squad to intercept the kopta to the right, termis moved to intercept middle and chaplain to the left. I took out his 3 koptas that scouted in the first turn using all my heavy’s apart from the thunderfire cannon.
The thunderfire cannon and one lascannon managed to make a 2 kan gap in the middle revealing his brunas behind.
in my next turn I opened up with my 5 heavy bolters into the burnas, he saved a lot with his force field but I got them to fail an
Ld test and they ran.
my next turn I took our 2 more cans and opened up with a few bolter rounds in the mass of boys behind following with charging my termis into the remaining kan on the right and assault squad+chaplain into a boys unit with the warboss. With the chaplains special rule of him and the unit he is assigned to all rerolling misses, I killed 12 or 15 of them and he only managed to kill 1 assault marine ^^ combat resolution meant all but his boss and nob were left. they hit back the next turn with both their klaws and a fresh boys unit and killed the chaplain and all but 2 assault marines which fell back safely. The terminators assaulting the remaining kan on the right and destroyed it.
Cutting it a bit short here by this time only 2 terminators, the tech marine from the thunderfire cannon and about 15 marines had actually died.
the assault marine (one has fallen to random pot shots but passed
Ld) rallied and moved in 2 turns to assault the heavy weapon unit at the back, managing to win combat against 6 of them, and charged them down and moved the next turn to assault the other unit
during all this my marines didn’t move at all and made us of rapid fire weaponry and a kan got through to wipe a combat squad out and the rest of the boys also wiped a combat squad. game ended and I was left with 5 bolter marines from my devi squad, 2 full tactical squads and a single assault marine. he had his mech dude (with the force field) a nob about 8 boys and 2 heavy weapon orks at the back. Got a little scary at the end but I managed to hang in
Overall the thunderfire cannon performed perfectly at opening a hole in the kan line with a couple of lascannon shots. and the assault marines did exactly what they needed to do massively thin his ranks. (the seemingly ultra badass assault marine will be getting a purity seal or two

)
aditionally, i will probably drop 2 of the heavybolters and go for plasma cannons or las cannons. The storm bolters in the
tac units actually helped wittle away the ork ranks quite well.