Game Breaker: The stud multiplier Red Bricks are easy to find and make the Lego City Hero ratings a matter of getting one purple stud. Thankfully, a lot of red bricks cannot be found until the endgame, or after the story is over.
One of the last upgrades, the jetpack, makes it possible to skip large sections of the main world's free runs.
Harsher in Hindsight: Why wasn't any of the characters in The LEGO Movie? They Wasted a Perfectly Good Plot as seen in the game is Chase a master builder and it had been fun seeing his department rebelling, and Dunby sticking up to where the money comes from. But they never show up, making one worried what might have happened to them.