Thorgrim raised and taught Belegar, housed his clan, sent Gotri our way and allowed Kragg to come. He's not a bad guy in this story - just misguided.
Yeah. For all that the thread likes ragging on people, this is basically exactly what we
wanted Thorgrim to actually do as a king; recognize meatgrinders and not throw his people into them. That we happen to be on the
other side of his first implementation of 'Common Sense: King Edition' is unpleasant, but the only reason he's not incredibly correct right now is that we're sitting on a gigantic superweapon that could theoretically kill five hundred thousand orcs in about ten seconds, if they weren't hiding from it.
Like, for Thorgrim, this is a combined tower defense and civilization building game, but his troops are drawn directly from his civilian population, not prodded from the aethyr through the use of money. He has to decide which levels he wants to play, and how much he's willing to sacrifice to win them. There are a lot of dwarven resources in this map, but the difficulty of the wave of monsters coming at us makes retaining them hopeless. If he puts more resources in, he's probably just going to lose them all with nothing to show for it, so he buckles down and cuts his losses.
He couldn't possibly have known that this was a special map with one of those gimmick-mechanics that shows up every ten levels, and then at the final fight there's some variation of it that you need to use to defeat the boss. Building gimmick mechanics isn't what Dwarves do. Well, I mean, building gimmick mechanics is about to be what dwarves do if we survive, because gimmick mechanics are awesome, but it's a new technology; they made some pretty ridiculous stuff back in the golden ages, but nothing with the same nature as this particular masterpiece.