Easily beat Noxus [adventure mode]

When you reach the noxus/trace battle in adventure mode, you can get onto the ledge trace is sniping you from. Remember the glitch in multiplayer where you can hang onto the wall? It works here too. Go to where there would be a double damage in multiplayer, and right in front of that big "box" thing that it spawns on, walk towards the wall to the right, starting a little to the left of it. If done correctly, you will be walking "in air", or hanging onto this wall walking forward.

Once you reach the end, jump onto a ledge thing you see, then go up the left ramp [need to missle push or morph ball boost to get up it] then jump to where trace is. You have reached the ledge. Kill trace, and go to the door that leads to the war wasp battle. Go into the hallway thats blocked off by force fields [its the hallway thats in the same direction as the door] and you'll be able to hit Noxus through the force field if he runs up against it. If he runs away, go close to it, then back away. He will return. You can beat him taking no damage this way.