I tried my stairs because they have gaps in the middle but I think that made it way harder...
I was at 8 and then my hands slipped because I was trying to use stairs and since I fell onto the stairs leading downstairs I almost hurt myself.
So... 8+ (UNKNOWN WHAT I REALLY CAN ACHIEVE!)
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I love Zigzagoon <3
http://i2.photobucket.com/albums/y14/ShadeSilverwing/ZigzagoonSolo.png