And more on Iratus:
The dungeon-crawling takes place in one megadungeon of sorts where you have to select which paths to follow. There is no backtracking, so it's "Vorwärts immer, rückwärts nimmer" like in East Germany. It's a bit more lenient compared to Darkest Dungeon since combat encounters are visible on the map far in advance, and you can basically go back to HQ after each fight.
While your dudes in Darkest Dungeon had to deal with stress damage, now it's your turn to dish out stress damage. Just about every class has at least one stress attack, and some units like the Banshee can only deal stress damage.
Similar to Darkest Dungeon, sufficient stress damage can cause a target to go apeshit or just straight-up die of fright.
It's a bit annoying that you can't unequip your duds, but then again just about all the equipment is what your undead dude is made out of. There's also a luzly feature where you unit's level is stored in its brain. Due to being able to unequip anything you can sadly not do brain transplants (afaik), but pre-leveld brains can drop as loot and are a good way to bring fresh units up to the current challenge level.
I always like undead in video games that do things a bit differently, and the best example here are probably zombies who are brick shithouses armed with guns and a hand cannon.
I'm also surprised that skellymen are pretty versatile: They can play bodyguard, buff armor and 2 very useful attacks (one ignores armor, while the other is a multi-hit attack that gains extra hits for each buff your target has on himself.)
There's also some Rogue Lite elements similar to FTL or Into The Breach that you keep your unlock progess for classes between each playthrough.