Have MM escort Roll to the boss door, except Roll walks non-stop, but very slow, and can be killed in one hit, and she's also weak to your buster, which means you can kill her in one hit by pure accident.
The stage is full of shielded enemies (Mets, Sniper Joes, Shield Attackers), and they keep their shields longer than usual (like 30 to 60 seconds), also, there's yoku blocks that you need to manually activate them to let pass Roll, and there's also Quick Lasers, so pray that those don't touch Roll, and to finish we have moving spikes, conveyor belts that sends you backwards, ice physics with bottomless pits in between them, and crushers, a lot of crushers.
But if you somehow manage to escort Roll safely to the boss door prepare yourself bor the boss itself... or should i say... bosses?
That's right, you'll have to face 3 Robot Masters at the same time, but not any RM, i'm talking about Elec Man, Quick Man, and Needle Man, not only that, but they also use a desperation move when their health is lowered to half, and those moves can kill you in one hit.
And you know what happens after you beat all of them? you get...
NOTHING!! YOU LOSE!!!
and then Toad Man pops out of nowhere and crushes you, and than laughs at your face (breaking the fourth wall), and then you get kicked out of the level with a Game Over screen (regardless of how many lives you have)
(did i mention there's no checkpoints anywhere in the level (not even in the boss door), and the backgrund and boss music are just made in GXSCC? well, there you go)