I've been playing AVWW since pretty much the day it was released. I've racked up goodness-knows how many hours of playtime (I can't find a way to show in-game stats), I'm just about to clear my third continent (bearing in mind I started play when it took a hell of a lot longer to progress then it does now), I've had the entire game completely redesigned underneath me - more than once - and still, still...
...still I can't find the bloody Advanced Heatsuit. You'd think after nearly 12 months of play it might turn up, but noooo....
My settlement has giant sailing ships and lighthouses, my squad of survivors all want to marry me from the numerous rings I've gifted them (though they still refuse to do suicide runs against a supercharged overlord), I've got every enchant, spell variant and craft item imaginable, I've done almost all of the unlockables (only the "20 umbra vortex" / "20 journey to perfection" / etc left, and they're really, really meh goals) and still, still... nothing.
I'm beginning to wonder if the fabled thing even exists, after just now rapidly clearing half a dozen surface buildings in Lava Flats I'm well and truly stocked on "entertaining novels", Magma and Skill Books but nary a fancy heat suit. Not a one.
Maybe I can send off for one. Five Lieutenant Scalps and £1 for Postage & Packing, delivered to my settlement by a Utahraptor in a postman's cap.
It's not asking too much, is it?