I'm going to keep this brief since I explained a lot in the video, but if you interrupt the animation to activate Shack Pack or Snooze Pack, you can keep Banjo's backpack on his back while the larger backpack of Shack Pack or Snooze Pack is being used. This causes some weird effects like animation corruption or health bar corruption. This is only pure speculation, but it appears to be some sort of pointer manipulation that could lead to ACE, but I have no hard evidence to back this claim up. Any help with this would be appreciated.