Ok first of all, 75k polys will not make it in-game as anything but a portalled up bsp, it doesn't look like anything at all, you DON'T KNOW HOW TO MODEL. Yes, it's a weapon tutorial, but it will give you an extremely strong base to start modeling off of, and teaches how to use the program properly. There are no "how to properly model covenant" stuff, because there are no exact rules for covenant architecture - you just need to be creative, and ask people if it looks covenant. If they say "yes", then it's fine. These aren't half-assed crits- there's nothing else to tell you. And I don't think you understand what trolling is.