Is there any places where you are able to possibly get out of bounds?

The only place I can think of is the Ogre boss.

There is a way to get enemies out of bounds that I have found, but I think with the ogre boss you can yeah. I think a stomper could work maybe(?)

Stomper maybe, I think anything that causes knockback can get you out of bounds. One thing I did want to try was the bombs from the first boss

I am unsure on how the bombs would work in conjunction with the knockback inbetween floors. Although the bomb entity stays inbetween floors, its knockback timer is too short to allow for its use in a clip.