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