From The TimeSplitters Wiki

Bricking it
Game	TS2
Section	Glass Smash
Map	Siberia
Character	Lt. Frost
Enemies Encountered	None
Rewards	Brick
Medal Requirements	Bronze: 1 min 0.0 sec Silver: 0 min 30.0 sec Gold: 0 min 18.0 sec Platinum: 0 min 11.0 sec

Briefing

After Private Poorly's incident with a grenade yesterday, all ammunition has been confiscated until further notice. This is no excuse to miss training though, so you'll have to improvise!

Strategy