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