Press down+shoot for one frame to get mega man stuck on the ladder.
Hold Right for 10 frames or more to get in the walk animation, then press Left the next frame to exit the wall easily.
Jump to exit the wall again, then exit at the bottom.
This assumes you have the magnet beam.
I would highly recommend to download the mp4 /w the hud visible and refering the guide under.
Useful Links:
/files/rta-credits-warp-hud.mp4Memory Locations:
$482=8A, $483=50 $484=13
Note it is required to be holding Up, Left, Select and A on a second controller for the final part to work at all. This sets the value $55 in the address $0017.
Kill the 3rd met and leave the 1st and 2nd alive, the goal here is to have the bullets of the mets set some very specific values in memory.
1) Stand in the first spot until the met shoots 3-4 times very quickly to set $49B to C4.
2) Stand in the first spot until the met shoots 2 times, and move to the 2nd spot ($49A=60).
3) Stand on the Left edge and wait for the met to shoot twice then go to spot #3.
Kill 3 enemies at the edge of the screen from here, make sure to not spawn the 2nd Green Guy before you have 3 drops on the screen, move to the spot on the image and take a hit. ($498=4A)
Follow the order and shoot accordingly. Do not use your buster after the final shot.
*all these are pixel perfect.
Walk left to despawn the final Green Guy, then place 5 magnet beams starting from the ground.
When on the 5th beam, wait until the 2nd to last beam is about to despawn and place 2 more quickly.
Wait until the last beam is about to despawn and quickly place another beam at the very top.
Do a full jump right and hold shoot before the beam you're standing on is about to despawn, hit select at this position (frame perfect) and let go of shoot.
Spam select while falling a couple of times to give yourself more time for the final part.
Do a full height jump while holding the shoot button to place the final beam at the correct position.
Do a slight wiggle at the spot in the previous picture to activate the DoubleObjectFF glitch and if everything went ok, you should be taken directly to the credits.
Note it is required to be holding Up, Left, Select and A on a second controller for the final part to work at all. This sets the value $55 in the address $0017.
Thanks to Nou1, Pirohiko and the other Mega Man tas'ers.