10. Possum Forest?

11. The dot stands still after you skip levels too quickly. It's same dot which you see extending itself after you won/lost/died in InstaKill/whatever. Anyway, it comes in various sizes (the one covering 98% of screen is the most common one, along with the few pixels big one), dependant on dot's size you saw before you skipped the level. Sorry if that confuses you.

12. Specify a little more. By jumping on water, or quickly swimming through it?

13. When a crate is destroyed during 0-baud lag, data with recorded trigger destroying will be lost during data sending. That's how I suppose lag to work. ;(