While definitely not flawless, it's quite fun to play. Each round goes until you're wiped out or every faction is either your ally or dead (you're heavily encouraged toward making them dead). Rounds of the game are as long as you want them to be, making this a great game for playing for an hour at a time or for playing hours on end. The clan warfare itself is small-scale and a bit easy because you can make gates inside the enemies' house, but it's still a challenge if the enemy clan is powerful enough.
The randomized worlds aren't nearly as variable as they could be, with each area in a world being a square--it feels like each area is a reskinning of the last one, rather than something completely different. The randomized quests in each randomized world get somewhat repetitive, as "kill this", "get these", and "find this person" don't offer much interest, but it's possible that higher level games have more interesting quests. Combat is what you'd expect from a Diablo-like game, and it's not significantly bad or significantly good.
The game hasn't crashed on me yet after several hours, but there's still a number of obvious bugs. Some player gates drift every time you use them, buried treasure and soulstones have their tags show up in every area, many abilities are missing text of how they work, and more. They're all luckily minor and not game-breaking, though.
It's a niche game alright - but a very good one. For massive real-time WW2 with a decent amount of realism, you really only have a choice between this, and some Blitzkrieg 1 mods. But only Hidden Stroke really gets the feeling of chaos, firepower and warfare done right.