Here is the full list of all 42 Death Park 2 achievements.
Start the game for the first time
Open parent's closet
Visit the locked room at the military base
Save your sister
Visit the island in the park
Save game 10 times
Leave the house
Get caught by the clown 10 times
Enter the code incorrectly 3 times
Read the note at the entrance to the cemetery
Repair the fire alarm
Return to death park
Activate protective towers
Complete the game on hard difficulty
Go down to the sewerage
Open the fridge in the house
Visit the gas station
Complete the game with hard puzzles
Go down to the house
Visit the toilet in the hospital
Kill 20 monsters
Open all endings
Complete the game on extreme difficulty
Guess the correct balloon on the last try
Guess the correct balloon on the first try
Kill 50 monsters
Kill 5 monsters
Inject HZ-3 into your sister
Overcome fire in the city
Go down to the basement
Don't save your sister
Completely assemble the mosaic in the house
Visit the scene in the park
Read the medical history in the hospital
Shoot the first balloon
Listen to shots at the neighbors house
Visit the toilet in the house
Visit sewerage
Dig up the head doctor
Move between worlds 20 times
Visit the back part of the house
Visit the crypt in the cemetery