Shaun White Skateboarding
45 Achievements
PS3
Infinite Arsenal
Use 12 power ups in one multiplayer match
1.4%
How to unlock the Infinite Arsenal achievement in Shaun White Skateboarding - Definitive Guide
EMFULZ
TrueAchievements
TrueAchievements
Just skate around collecting power ups, which are question mark icons, and use all of them you get. Basically self explanatory really. If you are going for the other two power up achievements, you'll most likely grab this one on the way.
BobbyLight
UNOBTAINABLE DUE TO SERVER CLOSURE
This ties right into Riding Benefactor, just keep picking up those white orbs and hitting 
as soon as you get them. Do it 12 times and this will unlock along with Riding Benefactor.
MC, B0B, x360a
Simply skate over the power ups, and use them right away. After a few seconds the power up will respawn, and you will keep repeating the process. When doing this I would try boosting “Trip’em Up” at the same time.