Here is the full list of all 42 Horror Hospital achievements.
Played more than 7 hour
Played more than 3 hour
Played more than 5 hour
Started a new game 50 times
Started a new game 55 times
Started a new game 60 times
Started a new game 65 times
Started a new game 70 times
Started a new game 45 times
Started a new game 25 times
Started a new game 30 times
Started a new game 35 times
Started a new game 40 times
You found battery 35 times
You found battery 40 times
You found battery 45 times
You found battery 50 times
Started a new game 20 times
You found 50 picture
Played more than 1 hour
Started a new game 10 times
Started a new game 15 times
You found battery 15 times
You found battery 20 times
You found battery 25 times
You found battery 30 times
You found 20 picture
You found 25 picture
You found 30 picture
You found 35 picture
You found 40 picture
You found 45 picture
First stage completed
You finished the game
Your find the first picture
Started a new game 5 times
You found battery 5 times
You found battery 10 times
You found 5 picture
You found 10 picture
You found 15 picture
First mission completed