Here is the full list of all 15 Cubic Crush Streamer Showdown achievements.
Complete your first game
Play your first game in Twitch mode
Complete 10 missions
Complete 20 missions
Complete 30 missions
Unlock all rooms
Spend 1,000,000 at once in the store
Use a PowerUp
Receives the !end command in Twitch mode
Receives !fire in Twitch mode
Reach the INSANE level
Get 100,000,000 coins
Discover the meaning of life, the universe, and everything else