Stickers (the term used for in-game Achievements) are unlocked after achieving Level 3 with a Pet in-game. Players can view their Achievement progress via the Achievements tab in the Main Menu. An additional second sticker, known as red ribbons, can be unlocked by winning an arena game on normal mode (achieving 10 wins) with the pet at Level 3 and is represented with . It should be noted the ribbon is contingent on the first sticker having been unlocked. There is also a third sticker, knows as blue ribbons, can be unlocked by winning an arena game on hard mode (achieving 10 wins) with the pet at Level 2 or higher and is represented with .

Hidden Achievements

In addition to the achievements that can be unlocked for Pets that can be purchased in-store, additional hidden achievements exist for certain Tokens and the Sloth. These achievements do not count towards Achievement Progress (i.e. these do not have to be completed to get a "100%" on the "Achievements" menu).

Tokens with Hidden Achievements

To unlock the token stickers, a player must trigger the ability of the mentioned Pets (mainly via Sleeping Pill, though there are exceptions) outside the battle and level the Token to Level 3.

Sloth Hidden Achievement

Sloth

This hidden achievement is particularly difficult due to the Sloth's very rare spawning probability, thus forcing the user to depend on Chocolate luck to level it up or other equally unconventional means. Furthermore, the Sloth is 1/1 and has no ability, limiting it's usefulness to a team. Teams struggle just to keep their lives before hitting level 3 with the Sloth, let alone getting a win with a level 3 Sloth to achieve the second sticker.

Moby Dick Hidden Achievement

Moby Dick

This pet has a unique way of getting it and was made specifically for achievement farming. It requires first giving a Sleeping Pill to Nessie? which will then stock a Peg Leg in the shop which sets the trophy goal to 12 and summons the Moby Dick on your team. This achievement is made harder by the fact the Moby Dick will delete itself off your team every battle so you essentially have 4 pets to win.

Tokens with no Hidden Achievements

The Dirty Rat does not have a hidden achievement since using a sleeping pill on the Rat does not spawn one due to a lack of an opposing team.

The Butterfly also does not have a hidden achievement since the Butterfly can only exist after the transformation of a level 3 Caterpillar at the start of battle.