Grand Theft Auto 4: The Lost and Damned

Achievements:

One Percenter
Objective: Help the President getting his bike.

Full Chat
Objective: Build Terry and Clay's toughness to 100%.

The Lost Boy
Objective: Take over the gang and become the leader of The Lost.

Get Good Wood
Objective: Knock 69 bikers off their rides with the bat.

Easy Rider
Objective: Finish the story.