For sure. Though I’ll be honest, I actually prefer lower difficulty games because I like a casual stomp :) I’ve only beaten one level 6 adversary, but half the reason is that I prefer level 3 or less adversaries even when I play the spirit I’ve beaten level 6 adversaries with. Hell, I’ll even play base difficulty a lot when I just want to knock around with other spirits.
Half of the “perfection” for me is that Spirit Island gives you the game you want to play when you want to play it, as long as it’s a cooperative game with spirits murdering civilized invaders :).
Well, yeah. The atmosphere of dispair is intentional. And it is entirely reasonable to get a full settlement wipe in the first attempt because resources have a snowball effect and regularly losing to monsters (or just wasting resources) will lead to you being underprepared for later on. After a certain point, you are forced to choose level 3 hunts, and are frankly dead-without-knowing-it if you aren’t ready for those (though, I can’t imagine surviving the “game over” fight prior to that if you’re not ready for level 3 hunts)
If you think of it as the settlement being your main character, however, it’s a lot less terrible. But still brutal because yes, sanity and body parts go flying in a heartbeat. And there’s at least one or two “if _____ all 4 survivors immediately die” ultra-rare moments that are pretty terrible (but usually salvageable)