A few more touch ups and additions

I just wanted to make a few improvements to the UI, level detail wise on level 5 since everything else seems good for the demo and some quality of life improvements such as the quicksand effect when submerged fully shows across the screen rather than leaving a black vertical band on the edge of the right screen.

Removed foilage

Added one ligthing

and also flattened a bit of the landscape

Just added in a few sceneric touches to the fake secret area

Added a movable block here too

Re-arranged stuff around the game end area