Just commenting on my own page in regards to asset reuse -

I'm recycling a bunch of existing code (most the menus are modified from Prop of the Class, and I'm reusing the most recent update of my cutscene code that I recycle in everything. The character art in the tutorial is almost entirely from the Prop opening.

There's some graphics in the opening and the ending cutscene that are recycled from either Prop or Dangercourse - slightly under half I think. I reuse three bits of music from Prop and Dangercourse in the cutscenes as well. I reuse the explosion sprite from Escapepion, but I put that in everything because I think it's funny. I also reuse a spike image from Prop, though the rest of the gameplay art is all new.

Think that's about it.