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