Here is the full list of all 24 Pigeons Attack achievements.
Survive the first round for the first time.
Reach Round 10 for the first time.
Reach Round 20 for the first time.
Reach Round 30 for the first time.
Reach Round 15 on the Village.
Reach Round 15 on the Beyond The Wall.
Reach Round 15 on the Hauted Forest.
Reach Round 15 on the North Mountains.
Reach Round 15 playing as Jim, The Messenger.
Reach Round 15 playing as Liz, The Warrior.
Reach Round 15 playing as Ron, The Mage.
Unlock all paths of the Village in a single match.
Unlock all paths of the Beyond the Wall in a single match.
Unlock all paths of the Haunted Forest in a single match.
Unlock all paths of the North Mountains in a single match.
Unlock all characters.
Unlock all maps.
Reach Round 10 without taking any damage.
Reach Round 15 without using any runes.
Reach Round 15 without unlocking any path, without any runes and no ultimates used.
Reach Round 10 playing the co-op mode (Local or Online).
Revive an ally on the co-op mode (Local or Online).
Be killed by a campfire.
Have your screen dirty by a white pigeon.