The The Mystery Of The Mooil Rig Add-on for Sunset Overdrive has 9 achievements worth 225 gamerscore.
Survive Chaos Squad in the Mooil Rig with at least 1700 Chaos.
Find Bryllcream... again.
Arrive at the Mooil Rig.
Smoking causes lung cancer, heart disease, and instant death.
Light fires big enough to see from space.
Protect the boat from bombs, mortars, and OD'd.
Defeat the DL-sea monster.
Anybody can be a movie producer, because nobody knows what they do.
Build the "Feel the Burn" weapon for a guy who is stir-crazy... or just crazy.