"Right before doomsday, they were met with a bunch of what seems to be muffins, ready to end you once and for all."

Yes, this is the entire stage. Which means it includes all the enemies at the stage.
Theme also included
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Game Source: The Battle Bricks (By BucketBazard)
Sub Chapter: Uncooked Business (TBB X Muffin Kombat 2 collab)
Difficulty: [TUMORE MODE]
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Tested: Probably- *Gets shot by a Prism Tank*

All characters here are 18+
(Proxies are enabled)
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a whole Madness Combat OST just for some muffins, they really going all out on you.

Normal version: here