Successfully complete one of the following tasks to get a trophy:

Finished Game (Giorgio) (Bronze): Finish a one player game with
Giorgio.
Finished Game (Evan) (Bronze): Finish a one player game with Evan.
Finished Game (Two Players) (Bronze): Finish a two player game
with Giorgio and Evan.
Sharpshooter (Giorgio) (Silver): Finish a one player game with
Giorgio with a score of 3500000 points or more.
Sharpshooter (Evan) (Silver): Finish a one player game with Evan
with a score of 3500000 points or more.
Speedster (Giorgio) (Silver): Finish a one player game with
Giorgio in 31 min. or less.
Speedster (Evan) (Silver): Finish a one player game with Evan in
31 min. or less.