Its Aboot Time - Matt Hazard - Blood, Bath and Beyond
This video will show how to get the "Its Aboot Time" trophy/achievement. The objective is to finish the level "Oh, Canada" in 12 minutes. The boss battle is the key here. You should try to get to the boss at around the 10 minute mark, which is rather easy. When you're in the boss fight, just spam grenades on him, then die and repeat. When you run out of lives, just hit continue and carry on with the grenade assassination. The boss should be dealt with in no time with this method.
Thanks to:
Vicious Cycle for developing the game and
D3 Publisher for publishing the game.