How do you unlock sneaky in the game minions

Going to Casual Collective and playing as a member allows you to unlock quick mode, Sneaky (The first of the locked minions) and Mirror and Random modes. The last 2 and 12 player games are unlocked by paying for a game upgrade. You may, however, join Mirror, Random and 12 player games without the game upgrade and you can play as the two locked Minions part of the games upgrade if your lucky in Mirror/Random.