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