952.2 hours in. Barely scratched the surface.
'Beaten' the core game (Which is roughly 2% of the game) about 20 times - well it's infinte as you can travel to paralell worlds and if you go into the sky or into hell then it's infinate in every direction.
Travelled to the paralell worlds, collected all the main game tablets, which lead to greater secrets. Beaten the Bridge Boss, the Grand Alchemist, the Pyramid Boss, The Dragon and the End dude. Been to the caverns, the hidden cavern, the rocky depths, the canyon, the orb rooms, the hidden temple, the jungle and a load of other places on the main world.
Shit scared of meeting the levitiathon and the master of magic and not even seen some of the others ones like the mechs that wiped me instantly. Also the other ones under the desert and the various fungal caverns are scary as shite.. Visited the gold, taken my first steps into the Sky. Got the moon once. Went to hell and was promptly snuffed out. Have done loads of pretty funny and sometimes scary fungal shifts. Have visited the tower and battled my way up through all the biomes. Visited the desert and solved some of the secrets such as the portal to the lake. Visited the lodge and am working out how to look at doing the Sun and Moon quests. Once I've done those then I can look at the Dark Sun and the Dark Moon quests and after all that I'm barely really into the game.
Most runs now last 2-3 hours, but obviouslyl one tiny mistake and you're insta dead via fire/water/polymorph/acid/gas/lava/molten metal/plasma beams/a million enemies/yourself reincarnated with a wand. Too many bosses to count and mostly sheer stupidity.
Keep coming back though. Simply the most awesome and unforgiving game I've ever played.
If you think you are 'good' at games then you'll be shite at Noita. Guaranteed.
Oh and they've done a load of updates to the game and are adding new biomes which you can see in the Beta branch. If that's not enough then there are hundreds of mods that completely change the game.
But it's the instadeath after a 12 hour run that gets you. You always have the option once you beat the 'end boss' but where is the fun in that - you can also 'win' and then go to a secret place and drop the reward to start 'New Game Plus' which gets harder and harder with all the biomes markedly different. But you can always give yourself a chance to travel to the parallell worlds and randomly encounter some git bosses but then also pick up new parks from each dimension.
If you want to play a literally infinate game (If you're good and lucky enough) then you can play for months if you want and you still wont' see it all.