wow good luck mate...jsprogg is well experienced so listen carefully LOL...serious. I will add...as I do them for a living..your terrain looks a little flat and kind of one texture for the whole thing. I would try some rock texture or mud...something similar to break it up and put something in there for scale...whether or not you need to do this is I guess part of the quest.

At present I see a good robot but nothing to give us a scale of the size of the beast. Good luck with it all mate...good to see young players having a go

cheers bullet