Ratchet & Clank 3: Up Your Arsenal

This is a skill point obtained at Qwark's Hideout. Play through the level until you swing across two Swingshot targets. Kill the Qwark Robots and instead of taking the middle path, follow the building on the right and you'll notice there's a gap between the building and the wall to the right of it. Double jump (don't glide or you'll die) onto the wall and wall jump up to the top to find a "Snow Dan". Break it with your wrench for the trophy.