Well, I wasn't able to include everything I wanted with the time I had, but I have something playable anyway.
I did all the development in Safari and Chrome so it should be working in those browsers. Opera may work too, but I'm fairly sure MSIE won't.
This is this first time I've used JavaScript or done any browser-based development, but it was kind of fun. I'm not sure how idiomatic the JS I wrote was, but I can kind of understand the comparisons to Scheme and Lisp now.
The goal is to get to the top of the tower/dungeon's 15 floors. There are various power-ups scattered in the dungeon and a selection of increasingly difficult monsters. I didn't have the time to add anything much more than that. No magic, equipment, or consumables. Just a quick hack'n'slash roguelike. I didn't work on balance either, so it's likely to be either really easy or completely unforgiving.
The source is at
http://bitbucket.org/buzaan/cvrogue I don't have a place to host the files in a playable state but you can download it from there, open index.html, and play it locally (just click on the "get source" link).
~ edit ~
I just realized I can serve static files through dropbox: You can play it at
http://dl.dropbox.com/u/293743/cvrogue/index.xhtml now.
I also made a few fixes after the deadline (there was a bug that would prevent you from finishing, and I tweaked the level table a bit) which I've pushed to the repo. The dropbox link will be using the assemblee code however.