You're best bet is to have a second person (or three, if you can). While the achievements are done 'solo', you can use the Xbox console's co-pilot feature (under console accessibility options) to allow multiple controllers to sync to a single player. While this feature is not useful in all games, it is great for music/rhythm games where multiple players can 'share a controller' so each player can focus on a single button/action.
The game is certainly doable without, but if you are trying to expedite the process, having local help is the way to go.