Here is the full list of all 28 Wand Wars achievements.
Eliminate an enemy while you are in chicken form
Eliminate the same player twice within one second
Complete the apprentice campaign
Complete the beasts campaign
Complete the witch campaign
Complete the machine campaign
Complete the demon campaign
Complete the challenger campaign
Win a round while having at least one clone
Cross the Beams
Eat chicken
Finish all campaigns on Legendary difficulty
Win a whole game without dying
Eat a frozen enemy
Destroy all of the blocks in the dungeon level
Use up to three shields within a single round
Eliminate three opponents with one death ray or fireball
Eliminate an opponent after dying
Have six power-ups in your inventory at once
Win a match without touching the sphere
Pass the sphere to your team-mate 7 times without the other team touching it
Teleport out of game right before getting crushed
Accelerate the sphere to its maximum speed
Destroy a cloud beast as the cloud sentinel
Destroy a cloud sentinel as the cloud beast
Destroy multiple magic arrows with a single catch spell
Win a team deathmatch game against 3 CPU players on LVL 10 difficulty
Unlock all game content