Here is the full list of all 71 Golden Light achievements.
Make 500 gold
Kill an Eyetaker with Meat Spear
Kill Eye Taker
Kill 100 monsters total
Kill Maneater directly
Find a multy barrel shotgun
Buy a key from Pile of Meat
Collect 25 keys total
Destroy a wall by eating an item
Kill a monster with a Shotgun
Finish any floor without taking damage
Complete any floor without using your weapons once
Lose an eye
Eat a poisoned item
Eat a fire item
Kill Carre directly
The Gut hates you
Make 200 gold
Make 100 gold
Find 3 Golden Meats total
Kill a monster with a pistol
Find your first Golden Meat
Burn a monster to death
Kill a monster with a Map
Ressurect your Meat Bro in Co-op
Read a special note
Complete 3 floors total
Kill a monster with a Pipe
Complete 1 floor in Co-op
Kill a monster with a Revolver
Bring a rose to Val
Die
Save her
Kill She in the flashback
Kill anyone with your Huge Chin
Kill a monster with an Axe
Kill a monster with a Tommygun
Put your hands into the talking toilet
Make 1000 gold
Kill Castle directly
Throw 500 gold at Son
Buy a key from Golden Eye Taker
Kill Needles directly
Kill Gut Divers directly
Collect Marv, Third Lung and Pulp mementos in one run
Kill Meall directly
Complete 20 floors total
Complete 50 floors total
Complete 100 floors total
Kill your Meat Bro in Co-op while having Traitorous Bastard memento.
Kill a monster with a Vein Whip
Collect Huge Chin and Nose with Teeth mementos in one run
Complete 5 floors without dying
Complete 20 floors without dying
Destroy 50 walls total
Meet Rose for the first time
Complete 500 floors total
Kill 500 monsters total
Kill 1000 monsters total
Enter the White Room on Meat War
Enter the Field Room on Meat War
Enter the Torture Room on Meat War
Enter the Murder Room on Meat War
Enter the White Room on MEATZONE
Enter the Field Room on MEATZONE
Enter the Torture Room on MEATZONE
Enter the Murder Room on MEATZONE
Get every memento and open the final door
Enter the Val Room
Enter the Val Room on Meat Zone
Kill Scourge directly