Man a fed twitch is cancerous....

What's the counter play to a twitch that can 2 shot you with auto attacks when camoflauge only detects at 700 range and his ult gives him 850 range?

Like seriously?

I'd be standing at a turret waiting to waveclear, no indication that Twitch is there, then I see him as I'm hit with the first auto to half health, then dead on the second auto?

I mean, yea, he was fed. Anyone is strong with fed. My problem isn't really that he was so fed he could kill me easily. It's that I couldn't even see him doing it...