Played this for a bit but ran into some trouble with the key mappings. CTRL to crouch means that I can't really press anything else without causing firefox to ruin the game.
* CTRL+R (reload) causes the page to refresh
* CTRL+W (walk forward) attempts to close the current tab
* CTRL+S (walk backward) opens a dialog to save the current page
* CTRL+D (walk right) bookmarks the current page
Luckily firefox shows a confirmation dialog before refresh or closing the tab, but that causes the game to freeze until you dismiss it.
Also sound didn't work at all
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