Not So Fast

Not So Fast is a mission in The Ballad of Gay Tony. It ties in with Museum Piece, of Grand Theft Auto IV and Collector's Item, of The Lost and Damned. This mission takes place from Luis's point of view, in which he ambushes the diamond exchange between Niko Bellic, Johnny Klebitz, and the Jewish Mob.

In this mission, Luis escapes via helicopter while Niko and Johnny fight goons in the right and left hallway, respectively. Luis drops down from the scaffolding and chases after Issac Roth after killing several guards and Mori Green during the deal. Isaac hides under the table from Luis. After making Luis an offer, Isaac is knocked unconscious by the butt of his rifle and Luis makes it to the roof, where he takes Yusuf's gold-plated Buzzard to safety after dealing with three police choppers.

Upon completion the player is awarded the Diamonds Forever achievement.

Trivia

 * Just like from Johnny and Niko's point of view, it is possible to kill the other protagonist. Luis can kill both of them, although you you fail the mission if any of them are dead, dispite them being enemies.
 * This is the first time this event was seen in a different cinematic point of view, as camera angles were edited to show what Luis was doing while Niko and Johnny tried to sell the diamonds.
 * Before climbing the ladder to escape the museum, you can hear both Niko and Johnny taunting their enemies.

Mission Requirements

 * Time: 4:35
 * Player Damage: 20%
 * Helicopter Damage: 80%