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