Here is the full list of all 18 Dash Realm achievements.
Win 5 Games
Win Your First Game
Win 10 Games
Win 50 Games
Play Your First Game
Use Your First Weapon
Use 50 Weapons
Use 100 Weapons
Kill a Player
Kill 100 Players
Kill 10 Players
Kill 50 Players
Dash for the First Time
Dash 50 Times
Dash 100 Times
Deal 1 Million Damage
Dash 500 Times
Use 500 Weapons