Overall this is a great game but the more I play it the more I get annoyed with it. It just gets harder and harder and you might be thinking "That's great!" but the way it gets harder is really just tedious. I'll be positive first of all, game has made me a little cranky. The visuals and music while simple are great, the base building mechanics are again pretty simple but they work just fine. I love the Defence Plan system, you can basically set what each character does in the event of an attack. Then at the hit of a button they all get in position ready to defend the base, it's pretty awesome. It feels like unless you play the campaign a certain way you have almost no hope of succeeding. I got right to the end recently but I hadn't unlocked a couple of research upgrades I had no idea would be important, just for collecting some random resources. Which meant spending hours trying to collect them, while being assaulted by increasingly difficult waves of demons. It's one of those games where you just kind of hit a wall and can't really improve fast enough to surmount it. The biggest pain with this is the very limited task force size, only being able to take 7 survivors on missions where you'll be fighting 30+ enemies almost as strong as you is frankly ridiculous, the UI looks like there should be 2 more even but nope, 7 is all you get. Couple this with the random map layouts and it can be super hard to make an effective strategy. It's also absolutely not a game you would enjoy permadeath with, if you failed a mission so hard you lost 7 good survivors you would probably not be able to finish the game at all. The AI is also really not pleasant, Demons will attack whoever is closest to them which means one person will get ganged up on and unless they can sprint they have zero chance of survival because enemy ranged attacks almost never miss and track you once launched. It's a good game mostly but I'm glad I got it on sale. I hope future titles are more fair.