Here is the full list of all 14 One Shell Straight to Hell achievements.
Come back to life for the first time
Gather all the weapons available
Find and rescue all the Halliwells.
Keep coming back from the dead ten times
Aquire all the master skills
Complete the Mansion act
Complete the Outskirts act
Complete the game
After an invasion, have all rooms destroyed, but Emily’s
Build equipment for all the available slots
Have 1000 coins in your pocket
Find the oldest member of the Halliwell family
Find Eva-s husband, Scott
Find uncle George and rescue him