Orion's B.E.L.T - It wasn't worth it. - -4 Plex.
Rear Entry - Fly-thru 6r Burgers and Rings in the wrong direction. - -4 Plex.
Aced It - Complete assessment in under 75 seconds. - 1500 Plex.
If you look at the 6r Burgers and Rings, before entering, you'll see that the end of the tube that's facing your approach has the word "exit" written on it. Enter through this end to get Rear Entry. (And yes, that's a negative plex reward.)
The Institute won't mind if you destroy the sign during your test.