Hi Guys
A Web-Rush is Hold RB and aim a "Target" For this Achievement you need this 10 Time in a Row.
Search a Big Tower or House and start the Web-Rush, the "Trick" is before you reach the End of the Web-Rush, you must start a new without "idleness" or something.
The Videos shows you :)
If you have a Question, ask me :)
Regards
PS: Sry 4 english, i´m german