So we just finished up and while it is fresh in my brain i'll write out the report.
the game was homebrew dark mechanicus vs t'au with some modifications
starting with the mission, we took our battle on a glacier, adding movement penalties to non flying units, Also of note were the objectives being portals units could elect to jump into and hop out of into another objective. Gimmicky but quite fun
round 1:

dark mechanicus get the first turn, using the drill on the top left they hop through one of the gnaw holes and right behind my lines. A quick firefight ensues where a few drones get gunned down and a broadside is imapled in close combat. Since nobody else was in range, turn passes to me.
tau respond with farsight declaring mont'ka and falling back with the broadside to finish the drill. Some drones move around, breachers pop out of a devilfish and i appear to be in a decent spot, passing the turn.

round 2
dark mech pick up the slack, with their infantry tagging and killing another broadside while their walkers hop up and down the devilfish, which suddenly again puts this match on a knifes edge. While farsight carves up some of them in melee, they still have the objective which is a big turn for the worse.
Tau turn responds in more shooting with a broadside using a homebrew strat to slip out and open fire on a walker, dealing some good damage with the help of a command and control node. Remaining breachers move out and try to reclaim an objective while farsight keeps working in cqc.
round 3
dark mech again keep pushing, the last broadside is focused down while some walkers stay put on a few objectives, luckily though, casualties overall are relatively light which enables a decent counter attack. using some hazards in manta, the hazards go to work taking out a walker and capturing the top left objective.
round 4
dark mech respond, deepstriking a smaller unit to hold another objective, clearing up some infantry and moving walkers to deal with the xv9s. some shield drones are blasted but miraculously they stay intact, even after a brutal level of their cqc. Tau respond by using the homebrew strat and falling out with and returning with a point blank blast of fusion cascades melting both walkers. However farsight is gunned down in overwatch, and breachers fail to claim my home objective which hands victory to the dark mechanicus on victory and kill points. All in all this game was a blast to run, and my opponent was very sporting and a solid dude to take a match with. as always C&C is welcome, and I hope you had fun reading this report
