I started this last night after my girlfriend played and finished it over the weekend when I was away, so I'm going in fresh.
First off it looks incredible, genuinely next-gen with the amount of things going on, which is the first time I've felt that with a PS5 game.
I've accidentally been almost sequence breaking and certainly solving platforming sections in unintended ways by jumping off the scenery - there was one collectible that clearly was supposed to be reached by wall running for example that I platformed up to a different way, and in an area where you are supposed to jump across boxes on conveyor belts I just ran past and jumped my way up at the end. This has been fun and I don't really want to complain about it - I loved doing similar in Mario Odyssey with cappy jumps - but I will say it could be more obvious what the intended way of doing something is! It hasn't been my intention to skip parts of levels that I've accidentally skipped just because I was exploring looking for collectibles. What's also frustrating is that I will often run into invisible barriers or parts of the scenery that just inexplicably can't be jumped on. It's annoying seeing a platform and then discovering it has just been decided by the developers you can't stand on it - even though you could reasonably jump onto it.
What is really a downer for me though is how the game treats death and progression. I'm playing on hard, died pretty early on and the encounter reset. Cool, I thought, I'll give it another shot - only to almost immediately level up (thus doubling my health). I had got much further into the encounter before I died so it seems that XP gets carried over after death - which cheapens the whole idea of replaying an encounter and doing better. I really feel like I was cheated out of beating the encounter legitimately. It's not even a choice - as far as I can tell there is no way of manually saving or loading from a manual save, so I can't force the encounter to reset when I die by reloading to a save of my choosing.
Later on I hit another issue in another encounter. Midway through I fell into some purple goop not realising it was an insta-kill and the game respawned me through a rift (this itself was confusing - it wasn't immediately obvious I had died but I'm pretty sure that's what happened). The encounter didn't reset though, it just respawned me mid-encounter and I carried on. What's the point in dying if I don't even have to try the encounter again?
I don't want mid-encounter checkpoints and I don't want XP carrying over after death. That's really cheapened the experience for me and as far as I can tell there isn't a way to work around that with manual saves. Please tell me if I'm missing something