Uhh, yeah, just a little:
https://steamcommunity.com/sharedfiles/filedetails/?id=1938439954
I never did Ironman but I did do career mode. I also started to replay the campaign but with the "8 parts to rebuild a mech" rule, which was NOT a good idea. It takes way too long to get anything together requiring that many parts! Still, upping it to 4 works out nicely as it makes it impossible to earn a big, new mech with just a single, lucky headshot.
Career mode works fine now with the 'Heavy Metal' series of missions to play with. They don't take you through the entire game but they take you through enough. There's some other fun ones, too. You can play them all after the campaign but you'll be so strong at that point that I don't think they'll challenge you much. Plus several have weight limits to encourage you to keep some lights and mediums around.
I did some Skirmish for achievements and to test out some builds. I only ever played single player.
When I started my career mode run, I got handed a Vulcan 2T. Those come with a really sad weapon loadout but I was able to change it to this:
That worked VERY well! In fact, I used that mech until I could get a good, solid heavy mech to replace it. It's fast, pretty heat efficient, and that CQC thing gives the small lasers the range of mediums. It could flank enemies or jump behind them and punch something's back then melt it with SLaser fire. After some upgrades (including another S Pulse laser), it was able to deal with the BIG! STEEL! CLAW!
When I stopped playing, the UAC weapons were (to my mind) somewhat too easy to find. Those things are horribly deadly! The MAD-3R's called shot bonus makes it a bit too strong as a 'head hunter' mech, too. Hopefully they've been tweaked a little since then.