How do you play his early game? Do you go +5 speed boots and try and get early ganks? Do you play it safe and farm like any other AD carry?
Make sure you get your farm. Twitch still scales very well into lategame, and is still capable of decimating entire teams under the right circumstances.
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"First thing that crosses my mind: I didn't get any GameFAQs Karma yesterday." Math Murderer after getting his appendix removed.