youtube.com/watch?v=45eB1F9AClk

found the tut on how to do it so i thought i will upload a vid of me hehehehe

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First you must be in a infection Game type.

when the game starts you need to run over to something you can climb up i recomend where i am.

then when the countdown to be infected gets to one you need to start climbing and by the time you reach the top your will be frozen and you can only spin.

its a quick tut sorry if its hard to understand..