Grassdigger | Pikmin 2 Glitch: New Napsack Carry to Emergence Cave @grassdigger8695 | Uploaded August 2018 | Updated October 2024, 2 hours ago.
The Napsack Carry Glitch is one of the oldest game-breaking glitches in Pikmin 2's history. It allows captains to be carried up walls and go places that they shouldn't be yet, such as OoB or past a wall.
TRex Quisite discovered this 5 and a half years ago by Glutton's Kitchen: youtube.com/watch?v=RKNTujFpuIs

Then, HSS0136 went through the whole game and found many, many other useful locations where we could do this glitch, here they all are:
To Snagret Hole (in water): youtube.com/watch?v=kCUK3WCSoac&t=3m50s
To Glutton's Kitchen (in water): youtube.com/watch?v=kCUK3WCSoac&t=6m9s
To Wild Yellows: youtube.com/watch?v=kCUK3WCSoac&t=7m4s
To the Citadel of Spiders trunk: youtube.com/watch?v=znN8DPn3YNk
To Dream Den: youtube.com/watch?v=znN8DPn3YNk&t=37s
To Subterranean Complex (1): youtube.com/watch?v=znN8DPn3YNk&t=2m2s
To Chance Totem: youtube.com/watch?v=46t1OUwmxXc&t=18s
To Yellow Onion: youtube.com/watch?v=bXiVifnDYrc&t=30s
To Subterranean Complex (2): youtube.com/watch?v=nGUj4qAwAL8&t=2m25s
To Frontier Cavern: youtube.com/watch?v=nGUj4qAwAL8&t=2m45s
To Snagret Hole (dry, blue): youtube.com/watch?v=bBM29VTQzjo&t=1h15m24s
To Snagret Hole (dry, yellow): youtube.com/watch?v=Mnk8fc7Oni4&t=25s
To above Snagret Hole: youtube.com/watch?v=Mnk8fc7Oni4&t=48s
To Bulblax Kingdom: youtube.com/watch?v=xVitUEHs7yo

EDIT: ShadowLugia found another Napsack Carry Glitch to Air Brake:
youtube.com/watch?v=uLoD-mCDJgE

These were all found over 5 years ago, and no more were found aboveground since then.
There are also 3 napsack carry spots in caves. One is on the final floor of Bulblax Kingdom: youtube.com/watch?v=zkHq-4mlc5Y&t=10m33s
Another spot is in Subterranean Complex 5: youtube.com/watch?v=kdRuIKwfdNA&t=1h15m34s
One last spot is in Glutton's Kitchen 6: youtube.com/watch?v=zpMTHQ3qHpU&t=2m43s
I'm not sure if HSS0136 found these, or when they were found. Regardless, me and other Pikmin 2 players thought that all possible napsack carry spots were found by now. However, we were wrong!

Now, we can use the napsack to go directly from the landing site to the area with Emergence Cave. Doing this is incredibly difficult, I think this is the hardest napsack carry glitch of all the ones listed (which may explain why it took us so long to find it).

Note that this glitch only seems to work with Olimar, and with either a red or blue carrying him. First, I lie down by the ledge towards the right without sliding backwards (I should get a slight kick to the side instead). Then, when I get carried up, I wake up, but I'm not done yet. I'm on a slope that I can't seem to get up entirely. Instead, I need to slowly move rightward, and use the napsack again in a particular spot. (If I were to keep moving rightward, I would fall off.) Now, I can get carried from here up the ledge, and once I wake up, I'm done!

The hardest part of this trick seems to be walking up the slope. I advise playing with different camera angles, and always walking forward. If you fall off to the left, adjust the camera angle to the right, and vice versa.

This trick doesn't have too many uses at the moment. I'll show one use for this trick in an upcoming video. However, if we ever found a way to have the napsack on day 1, then we could definitely get to Emergence Cave on day 1. This would probably make a 5-day completion possible.

EDIT: This glitch does NOT work if you have the Rush Boots.