Some more build pics:
Here are the cut out parts for the Gauss Cannon and the Class 1 Driller (also Becker Industries):
When assembling, I found I needed four more glue tabs on the upper box-part of the Gauss cannon:
Here, the basic parts are assembled:
And here both cannon and bot are assembled:
And two battle pics. I left the orientation of the second image seemingly wrong, because in Descent, that angle is not unusual at all, bwuahuahuahua!