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