I hadn't added chiptune.com to my NoScript whitelist yet, so javascript was disabled. It just stopped at the "Insert Workbench 1.3" screen. Classic! Took me a second to figure out what happened, and then I laughed when I whitelisted the site and then it loaded to workbench. :-) Really well done. The Atari in the trashcan a nice touch, as well!
You should be able to get the "command" help list by doing a dir c: in the shell. (That was my first thought on looking for what commands were available - I didn't realize I could get the command list until I turned on help.)
And I was disappointed I couldn't hack the s:startup-sequence. :lol:
Really beautiful, though! A++