Here is the full list of all 37 God of War achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Obtain all other achievements
Defeat the nine Valkyries
Use treasure maps to find all of the dig spots
Fully upgrade the Leviathan Axe
Retrieve all treasure from the Workshop’s center chamber
Fully upgrade the Blades of Chaos
Complete all of the Trials of Muspelheim
Fully upgrade a Runic Attack
Kill 1,000 Enemies
Read all of the Jötnar shrines
Obtain Traveler armor set
Obtain Ancient armor set
Collect all of the Artifacts
Explore all the Lake of Nine has to offer
Assist all of the wayward spirits
Kill all of Odin’s Ravens
Free all of the Dragons
Fully explore Veithurgard
Complete all of Brok and Sindri’s Favors
Fully upgrade your Health
Spread the ashes
Defeat Baldur
Ride the ship out of Helheim
Fully upgrade your rage
Rescue Atreus
Learn the languages of Muspelheim and Niflheim
Heal Atreus
Retrieve the Blades of Chaos
Defeat Magni and Modi
Defeat the Dragon of the Mountain
Allow the Light Elves to return home
Upgrade a piece of armor
Survive the Witch’s Woods
Craft an outfit for Atreus
Obtain a Runic Attack Gem
Defend your home from The Stranger
Slot an Enchantment into your armor