Duke VR is for version 1.4/1.5. It has 18 levels and the file is 89KB in size. The file name is DukeVR.zip. It was released on August 25, 2003.

The text file says Duke VR is based on MGS. It's a puzzle/obstacle course type TC. There are 3 episodes with 6 levels each. Some levels are easy to figure out and some are hard. Just look at the screenshots. What you see is basically what you get.