It has 12 stages. Training has not yet begun. While it will likely take a long time to master this game, with only 6 stages, completing the game will not take more than 2 hours at most. I have found the optimal route for a speed run, and have completed the game without dying before. I expect this game to take 1 hour to complete.
Training is in progress.
I have 3 levels left to master. I expect this game to take 1.5 hours to complete. I have completed it without using a continue. I expect this game to take no more than 1.5 hours to complete. These are the times I can complete each game, alone.