Completion in The Ballad of Gay Tony
From Grand Theft Wiki
To attain 100% completion in The Ballad of Gay Tony, the player must accomplish all of the following:
- Complete the main storyline missions (I Luv LC to Departure Time)
- Complete 25 Drug Wars
- Win the 3 triathlons
- Complete 8 management activities in the Maisonette 9 nightclub
- Dance successfully in both Maisonette 9 and Hercules
- Win the champagne drinking game
- Win a game of pool, darts, golf, and air hockey against a computer or friend.
- Bring both Henrique Bardas and Armando Torres to air hockey, darts, pool, golf, drinking, eating and strip club
- Exterminate 50 seagulls
- Find all 3 Random Characters:
- Win the cage fighting championship (6 rounds)
- Complete all 15 Base Jumps
- The only 100%-specific reward in TBOGT is the ability to buy an unlimited amount of ammunition, although it still costs the same as before. A glitch (also appearing in GTA IV) exists that means any ammunition purchased beyond the standard limits will disappear when you load your save file.