whers rush?

the skill part aint working, and i like the skill, thinking about it for my runner, cause u get adrenaline after getting hit, and it takes 4 adrenaline (low) so, i thought it would be nice. so where is it?

Your question is weird. At first it sounds like you're saying Rush isn't working, then you ask where it is?

You can find Rush from Gammel in 'Copperhammer Mines'.

For a runner, I think you'd be better off using Spring and "Charge!". 4 Adrenaline sounds low, but when you're just taking hits, it takes a lot more than you think (4 hits on you does not equal 4 adrenaline). If you insist though, consider taking "To the Limit!" to help fill up your adrenaline on the go.