Here is the full list of all 29 Tower 57 achievements.
You have unlocked Pristine Pools.
You have been carried by another player.
You have unlocked the Canal.
You've played at least once with every character.
You have unlocked the Sweatshop.
You have unlocked the Ministry of Rehabilitation.
You have unlocked the Biolab.
You have unlocked the Upper Floors.
You lost over $500 playing the Cup Game.
You won over 10 Cup Games.
You won over 10 Darts Games.
You won over 10 Nagel Games.
You found all the loot crates in the Canal.
You found all the loot crates in Pristine Pools.
You found all the loot crates in the Sweatshop.
You found all the loot crates in the Ministry of Rehabilitation.
You found all the loot crates in the Biolab.
You found all the loot crates in the Upper Floors.
You revived a dead character.
You revived all characters at least once.
You have carried a legless player on your back.
You used your special attack 50 times.
You have completed the game.
You have completed the game with all characters.
You killed the train conductor.
Never surrender!
You gambled, you won!
You rescued the princess!
You are the true savior of Tower 57!