D2 Encounter at Farpoint

[Weyrman]

Hey all,

I am playing through my single player games, currently doing Encounter at Farpoint. I am on the last (5th) level. It has no robots, only 1 (seemingly) inaccessable powerup and three keys. I can get to the blue key but there is no blue door, no exit door, no hidden rooms (I've checked with the editor). What is the point and purpose?

Can anyone remember?

Can anyone help?

Please?

???

?