This is a whole diffrent idea i've always wanted to see,
-intro it were you hotkey your ling at start like an intro that tells u to,
-use the vision trigger to make it so u cannot see your ling
-make 2 buildings and name them nothing or torch
-make the torches sight be to the start to end
-trigger to make u have vision of torches but thats it
-trigger again so when u finish obstacle the path behind you is lit
-make torches start as an unvisioning player so u only cant see all the obstacles in front
-when finish obstacle make torch change as the obstacle switches are cleared
Ultimo idea for an explorer bound add terrain themes like "Ob 4 Cross the waterfalll"
and have a waterfall in obstacle back ground that would be AWSOME!