Here is the full list of all 12 Atlantis Royale achievements.
Atlantis Royale
You killed 10 people
You killed 20 people
You have made your first TOP 1
Take 1000$ in one part
Take 1500$ in one part
Take 3000$ in one part
50 Kills
Take 15000$
Win 30 Royale Games
Kill 3000 Zombies in one game
2500 Kills