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