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