Since there currently does not exist a full walkthrough of the entire games' 70-stage Quest mode, here's a speedrun/walkthrough of the final (and hardest) Quest stage, which shows how to line up the ball for a few of the "impossible" pocket holes after your ball spawns back in.
After having cleared the last Quest stage after spending several hours losing my hairs and trying to find a setup for THOSE two holes towards the top, I have finally earned the last RetroAchievements goal for the game and have completed (or Mastered in RA's case) the achievement set!
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Speedrun profile: https://www.speedrun.com/user/LarviStar
Discord server: https://discord.gg/9NWN9RX
At present, LarviStar has 164 views spread across 4 videos for Pokémon Pinball, and about 3 hours worth of Pokémon Pinball videos were uploaded to his channel. This makes up less than 0.51% of the total overall content on LarviStar's YouTube channel.