I gotta say, my favorite part about this entry is that, by having the grapple push cubes towards you as well as push you towards them, it ends up neatly fitting into both GMTK Game Jam themes so far (something you yourself seem to have noticed if one of the level names is of any indication).
Also, HOLY COW THIS WAS MADE IN TWO DAYS!? With this level of polish from both a gameplay and aesthetic level, if you told me this wasn't a game jam entry, I would 100% believed you.
Also also, that ending was terrific.