Around 22 minutes to beat the first loop. This version loops after 2 stages, but requires you to beat several loops to see all the unique stages, however the ending is the same after each loop. The version I remember playing has all the unique stages in the first loop. Unsure which regional version that was.
This version felt pretty difficult on default settings. I remember these games being easier, as Ive beaten many ports and versions over the years, even a much harder hack.
TheConsole Killer presently has 554 views for Donkey Kong Jr. across 9 videos, with his channel publishing less than an hour of Donkey Kong Jr. content. This is less than 0.01% of the total video content that TheConsole Killer has uploaded to YouTube.