Around 16 hours 19 minutes to beat. This edited playthrough shows all the dungeons that feature combat and platforming only. I dont show any overworld exploration or non combat mazes, navigation here. I show all deaths that occured in these successful dungeon runs. I was following a guide step by step and it was very slow with alot of pausing. I did the same for the action segments but I learned these dungeons since I failed some of them many times, eventually memorizing where everything was and what to do. Save state practice makes that process alot more efficient too. This was in the backlog for some months so it was time to KILL it off. Most of the dungeon runs came out pretty clean with some of the hardest ones being done with no deaths on the successful attempts.
There is already a great tutorial for this game from the channel YouCanBeatVideoGames, which is the one I used. It also wouldnt be that helpful for me to explain what I did in these dungeons since there is alot of other things you have to do to progress the game, and as I said I didnt know the game to do it quickly.