Here is the full list of all 45 Saints Row: Gat Out of Hell achievements worth 1,000 gamerscore.
Got 250 kills with the Essence of Wrath
Conquered all of New Hades with 100% City Take Over
Stonified and Shatter Killed 100 Demons with the Stone Blast Supernatural Power
Purchased 113 Supernatural Power Upgrades
Found 100% of all Soul Clusters
Found 64 Tomes
Had five Imps attached to you at one time
Upgraded one weapon to the max
Completed all open world gameplay in two districts of the city of New Hades
Killed 50 of your own summoned Imps
Killed 150 Demons with the Stomp Supernatural Power
Beat the game
Smacked into the ceiling 10 times while wall running
Flew continuously for 60 seconds
Played Saints Row: Gat out of Hell Co-op for 3 hours
Collected at least five Soul Clusters without touching the ground
Found 100 Soul Clusters
Stayed airborne during Supernatural Jumps or Flight for a combined 10 minutes of gameplay
Bought your first Upgrade from the Upgrade Store
Got your first Supernatural Powers
Died in the lava
Choose a new element for all of your Supernatural Powers
Get a Comet into the Ultor lobby
Find 75 Barnstorming Diversion locations
Fly from the roof of Snowball's Chance to Sinterpol HQ's roof, without landing
Fly for 250,000 meters
Car surf on a Comet while it explodes
Kill 25 Arch Dukes
In Torment Fraud, hit 5 vehicles in a row without touching the ground
Get 100 kills with the God's Hammer
Knock a vehicle into the lava
Kill 100 Demons using the Coldfire Aura Supernatural Power
Kill 1000 Demons with any combination of Supernatural powers
Have minions kill 100 Demons with the Summon Supernatural Power
Kill an Arch Duke with a melee attack
Stand on the tallest mast of the 'Queen Anne's Revenge'
Play for at least 2 hours as Gat and 2 hours as Kinzie
Fly for 500 meters while on fire
Get 250 kills with the Essence of Sloth
Stay in contact with the lava for 10 seconds without dying
Take down an Extraction Facility while on a motorcycle
Complete ALL of the Challenges
Kill 25 Demons with each of the Seven Deadly Weapons
Shoot down a Spire missile with a blast while hovering
Spend over 20 hours in Hell