This is quite shit, and still uses the default objects, placement and ect, because I'm lazy. However, it serves as a proof of concept to show that custom maps ARE possible, and also, theoretically, custom objects.
I also made this so I could laugh at me running up VERY steep inclines.
The ai and map handles surprising well!
To install, rename the media folder in the rwr folder of your game to "mediavanilla", or something similar, then put the folder you downloaded from me in. To go back to playing the normal game, rename the media folder to "mediamod", or something similar, and rename the previous folder "mediavanilla" back to "media".
http://www.mediafire.com/?u14u7jajaj8h0a1Enjoy.
Well, probably not that much, since it ain't nowhere near finished... but... meh.
OK.