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