Chronon Barrels
There are several different types of interactive elements during combat. Fire extinguishers, oxygen tanks, propane tanks, oil drums, and these odd looking canisters that look like large batteries. These contain Chronon, the mysterious element that powers anything related to time.
The barrels are extraordinarily powerful, able to completely decimate an entire area with a stronger version of your Time Blast. You can’t simply shoot at them though. They require one of your time powers, namely Time Stop, to be cracked open. Simply launch a Time Stop bubble (RB) then start pumping rounds at the Chronon barrel. When it explodes, enjoy the cool time warping that occurs within its blast radius.
There are usually a couple of these in most combat areas, but they can only be used once each. Make sure to round up as many enemies as possible before setting one off.