Around 50 minutes to beat, right after completing the Switch game. Since I beat these back to back I knew what to do. The Switch version took me around 2 hours 22 minutes prior.
Great game. Beating Normal Mode gives a bad ending and prompts you to restart the game, however I would still consider this beating the game on Normal, since this is all that mode offers. I believe Hardcore Mode has to be completed to unlock the true ending. Hardcore Mode is not only harder but doesnt replenish any health , no checkpoints and is limited to 3 lives and no continues.
I show the checkpoint transitions but deaths where no new checkpoint progress was made are edited out. I didnt have too many deaths in this playthrough, and beat the final boss on the second try, which is the hardest part.