Mercury

It takes a while for B to get to the exit once the door is unblocked, so be patient.

Maybe a bit straightforward and easy but I had fun...Thanks for sharing @D.S.Masters

I was wondering what B was doing inside but B came out!! Interesting route with a trick requirement. BTW I did die once thanks to the zappers (hot off the start) but B got it the next time.

@gmacpro I had to take a long route inside to avoid the mechanisms... possibly could have been shortened.

Nice although too straightforward. Thanks!