Will echo what others have said here: currently 25 hours in and have reached 38% completion, so I don't think i'll be seeing the back of this in the predicted ~35 hours. I still have huge sections of the map I've not even explored, quests and errands stacking up - it's all gravy.
LIke others here, I'm absolutely blown away. Think of Witcher 3 style world and quest design, MGSV style open world encounters and a little TR/UC style traversal/platforming.
The combat I can't really compare - very much a beast of it's own - but it defintely has a bit of BB influence. Be ready to read attack animations, because spamming the dodge button just gets you killed. The machines in particular have big wind-ups on thier melee attacks and your iframes are limited, so timing is crucial.
Garb also reminds me of BB in that there's no single super-duper set that'll cover you in all scearios. Each outfit is tailored to specific areas and enemies, but you'll need to swap out for each area.
Game is an absolute bench mark and hands down one of the best looking games ever put to market. Between
