I never thought I will be back again enjoying old style 2D indie game, but here I am... Finished Hollow Knight for at least a dozen times. First walkthrough took me over 90 hours, subsequent are much shorter - 12 to 15 hours each... It's possible to finish the game for the most obvious ending in under 4 hours, but you'll be robbing yourself of much more exiting experiences and 3 secret endings. Try to find the ruins of White Palace and awake your dream nail And by all means, don't want countless YouTube walkthroughs, you'll be robing yourself of 90% of the game excitement. Good luck and enjoy!