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