[DD20] The Cavern Demo

A. 7Zip reports damage to some files in zip. (may be responsible for other issues, but unlikely)

B. Jumping is very unresponsive (even from dead start).

C. Carried items can glitch out of existence if released mid-portal. (should have a reset item to origin/checkpoint (whichever is last) failsafe)

D. Does not honor options.

E. There is no third blue orb. (in bounds at least)