Here is the full list of all 25 Charlie's Adventure achievements.
Get 10 zombies killed by the Arrow Machine.
Finish the game on hard difficulty.
Get 10 zombies to die by an Axe.
Finish the game on any difficulty.
Finish the game on medium difficulty.
Complete all levels with 3 medals.
Get 10 zombies to die by a Cannon.
Get 10 zombies killed by the Saw Trap.
Get 10 zombies killed by the fire.
Kill 200 Zombies.
Slam the ground and hit a zombie 100 times.
Collect a total of 500 stars.
Hit the crazy zombie with the bombs with a bullet.
Dash trough zombie 100 times.
Get the medic zombie to heal you for 100 total health.
Kill 75 Zombies.
Collect all stars on any level.
Make the zombie that charges you hit a wall.
Collect a total of 100 stars.
Finish first level.
Slam the ground and hit a zombie 10 times.
Get 10 zombies to be squished by the Stone Trap.
Dash trough zombie 10 times.
Kill 10 Zombies.
Collect a total of 10 stars.