http://imageshack.us/photo/my-images/20 ... oader1.png - Savior is killed by an invisible roader.
http://imageshack.us/photo/my-images/71 ... ader2.png/http://imageshack.us/photo/my-images/13 ... ader3.png/ - Savior uses Mirror Buster on the roader to have an unlimited mirror buster beam.
Here's what happened: On Turbo Man in duel/LMS, using either Proto Shield or Mirror Buster appears to destroy a roader. It actually becomes invisible and stationary- if you walk into it you die, if you use Proto Shield you hear the "shield" sound effect repeatedly and Mirror Buster is shown above (mirror turret). Leaf Shield had no effect.
MM7DW4
http://imageshack.us/photo/my-images/3/ ... tbox2.png/http://imageshack.us/photo/my-images/68 ... itbox.png/One of the teleporters that takes you to the top of the stage (couldn't distinguish them, sorry) causes you to end up like in the pictures above. Basically - after teleporting, you fall through the linedefs and onto the ground, instead of being on the linedef. While on the ground Guts Man G also fails to target you (because your hitbox is up above where I'm looking in the second image). I was unable to recreate this on the other side's teleporter.
EDIT: Thanks for reminding me- using Mirror Buster while Junk Shield is active causes the Junk Shield to explode.