Here is the full list of all 40 Lakeview Cabin Collection achievements.
Beat Lakeview Cabin VI with everyone alive and 10 NPCs saved.
Get rid of the weird smelly stains
Wear all five masks at the same time
Beat all four episodes
Save at least 15 crew members
Sympathy
Save the poor soul
Kill the barn inhabitant
See the family portrait
Get the dog to survive till the end
Beat the Minisode "Last Christmas"
Push the bed to the limit
Throw a friend into the woodchipper
Beat Lakeview Cabin III with everyone alive
Kill 30 zombies in one run
Get three of your friends to "return"
Burn the enemy to crisp.
Collect all records
Drop the windvane on an enemy
Finish the game with everyone missing a leg
Hack up your friends
Defeat the sewer monster
Beat Lakeview Cabin IV with everyone alive
Open all the secret doors in one game
Get to the attic without raising the alarm.
Collect 5 bags of gold
Redemption
Tragedy
Get a score of 50 in "Super Dad"
Drink all the beer you can find
Get a score of 50000 in "Space Psychos"