Here is the full list of all 79 Scream Collector achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Find 1000 Hidden Objects In The Bunker
Activate the Prepared Bonus 1000 Times In The Bunker
Activate the Click Bonus 1000 Times In The Bunker
Activate the Speed Bonus 1000 Times In The Bunker
Make 10K Sounds In The Bunker
Change the Channel 250 Times in the Bunker
Have 600 of Everything In The Bunker
Revel 500 Sections of Dirt
Click on The Toilet Paper 25K Times
Scratch Cards 250 Times in the Bunker
Earn 1 Trillion Halloween Spirits In The Bunker
Freeze and Shatter 25 Critters
Bring The Monster To Life
Defeat the Microbes 250 Times
Catch 50 Prisoners
Earn 1 Trillion Halloween Spirits In The Dungeon
Enlarge 50 Things
Activate the Dread Bonus 1000 Times In The Dungeon
Activate the Click Bonus 1000 Times In The Dungeon
Activate the Speed Bonus 1000 Times In The Dungeon
Open The Treasure Chest 50 Times
Have 600 of Everything In The Dungeon
Find 1000 Hidden Objects In The Dungeon
Harvest 100 Fruit From The Vine
Grow The Vine To Full Size
Hit The Target with Green Goo
Throw The Green Goo
Defeat The Chicken 100 Times
Smash Potions 250 Times
Tickle the Prisoner To Death
Smash All The Potions In Potion Smash
Make 10K Spooky Sounds In The Dungeon
Burn 250 Critters
Mix a Potion of Each Color
Click on the drain 250K Times
Cast 150 Spells
Rebuild the Hanging Skeleton 50 Times
Clean Up 1000 Spiders & Webs
Open 250 Doors
Smash 250 Skulls
Snuff Out 1000 Candles
Set the Clock 100 Times
Catch 50 Rats
Use 100 Butler Treats
Find 1000 Hidden Objects In The Entry Hall
Feed The Bear Rug
Change the Fireplace to each color
Activate the Chill Bonus 500 Times
Activate the Click Bonus 500 Times In The Entry Hall
Activate the Speed Bonus 500 Times In The Entry Hall
Smash 250 Pumpkins
Earn 1 Billion Halloween Spirits In The Entry Hall
have 500 of Everything In The Entry Hall
Kill The Vampire
Scratch Cards 250 Times
Make 5000 spooky sounds In The Entry Hall
Chase the tentacles off the stairs
Find 1000 Hidden Objects Outside
Melt 100 Witches
Click on the Rug 100K times
Open the door of the house
Feed 100 Trees or Zombies
Capture 100 Ghosts
Activate the Scream Bonus 500 Times Outside
Activate the Speed Bonus 500 Times Outside
Activate the Click Bonus 500 Times Outside
Play 50 Games of Simple Simon
Explode 500 Flying Bats
Earn 1 Billion Halloween Spirits Outside
Have 500 of Everything Outside
Make Lightning Strike The House!
Spin The Wheel 250 Times
Capture a Ghost of Each Color
Poke The Giant Eye
Click on the house 100K times.
Build all floors of the house
Buy the Giant Moon
Make 5000 spooky sounds Outside
Knock on the Door 100 Times