This is kinda annoying, maybe it's just my luck, but I missed with two 95%s and two 90%s, and the enemy hit with about four 25%s or 30%s. All in one game. I get a feeling it's a game error
On level 6, you use portals to get to the top ledge. Then you shoot two portals back down on the red spots, and then you jump down.
On level 7, you shoot a portal on the floor and one on the ceiling. Then you go in the one on the floor and wait while it builds up speed. Once it has speeded up sufficiently make the portal in the ceiling go on another place on the ground.
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