Using HaloBall's gametype labels and soft kill barriers you can keep items from going places you, the creator, don't want them to go. Anyone who played SCYSF knows what I'm talking about. To add to that, items can be switched through the kill barriers to get around that trick.
Even though i discovered about half of these in all our playthroughs, (>_<) this is perfect and talks about all the challenges we've faced so far. Hopefully it will continue to grow as more things are discovered. Boot-i-ful. ed: ye bby u finally mentioned me <3
Oh, I forgot to mention barrier breaking. You can get through smaller sized kill barriers even if they are hardkill. Will edit with video once I find one. I hope this is still being updated. http://www.youtube.com/watch?feature=player_embedded&v=znlix3UheaA