PES 2010
28 Achievements
1000
Xbox 360
Winning Streak(Online)
Awarded when you have 5 successive Ranked match wins in the Online.
20
How to unlock the Winning Streak(Online) achievement in PES 2010 - Definitive Guide
shilbo, assassin
The easiest way is to boost unless you are really good. Quitting to the dashboard for the first 4 games and then playing the fifth game to the end (and winning of course) will unlock it. If you need someone to boost with, you can find a partner in the achievement trading thread HERE.