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