Start (Atreus)
This is where you show up when you arrive on Helheim for the first time, playing as Atreus.
Mystic Gateways act as fast travel points in God of War Ragnarök. By interacting with such a waygate you will be able to travel to other waygates available at the current stage of the game.
Hel's Perch
You must find all the Odin's Ravens to complete the "Eyes of Odin" favor. When you find one of Odin's Ravens, you need to destroy it with one of your weapons. Once you've destroyed enough of them (6/12/18/28/38/48), return to the Raven Tree in Niflheim to open the unlocked legendary chest and receive rewards for doing that.
Helheim Odin's Raven (Helgrind #1)
Helheim Odin's Raven (Helgrind #2)
You reach this place after finally defeating Garm, on your way back to the mystic waygate.
Hraesvelgr
You reach this place after finally defeating Garm, on your way back to the mystic waygate.
Prayer to Hraesvelgr
Nine Realms in Bloom. Collecting all nine flowers is the objective of the "Nine Realms in Bloom" favor. This favor appears in your journal when you find the first of the flowers. The flowers are located in places you will reach in the later stages of the game and some of them you will be able to collect only after completing the main storyline of the game. Once you collect all nine flowers, you will unlock "The Florist" trophy.
Soulblossom (Helheim)
You will reach this place after finally defeating Garm. In order to get to the other side where the flower is, you need to use the Draupnir Spear.
You can find 60+ Legendary Chests in God of War Ragnarök, 53 of which must be found to complete all realms at 100%. None of these 53 chests can be missed. They are large gold chests and always contain some sort of reward.
Helheim Legendary Chest (Docks of Vadgelmir)
It does not count towards the completion of this realm. Contains: Onslaught Shield (Shield). You will reach this place after the first fight with Garm. If you do not open this chest just go forward then this shield can be bought later at any shop.
Helheim Legendary Chest (Docks of Vadgelmir)
It does not count towards the completion of this realm. Contains: Wrath of the Wolf (Runic Summon).
Helheim Legendary Chest (Docks of Vadgelmir)
It does not count towards the completion of this realm. Contains: Falling Sky (Bow Ability).
Helheim Legendary Chest (Shipyard of the Fallen)
It does not count towards the completion of this realm. Contains: Thrust of a Thousand Soldiers (Draupnir Spear - Light Runic Attack).
Helheim Legendary Chest (The Gleaming Bale)
It does not count towards the completion of this realm. Contains: Tame the Beast (Blades of Chaos - Heavy Runic Attack).
Hel-Traveller
Drops: Boon of Wrath (Amulet Enchantment), Frozen Flame.
Hel to Pay
This favor will start automatically after you close the Hel Tear located here, which will happen during the main mission "Reunion". Your task will be to find and close a total of 6 Hel Tears, two of which you have already closed, so you will be left with four more: Alfheim Hel Tear (The Strönd), Midgard Hel Tear (Well of Urd), Vanaheim Hel Tear (The Southern Wilds), and Svartalfheim Hel Tear (Aurvangar Wetlands).
Garm (First Fight)
This is where you fight Garm for the first time.
Garm (Second Fight)
It is here where you will fight your second "full-scale" battle against Garm.
Closing all 6 Hel Tears is required to complete the favor "Hel to Pay". Hel Tears are the source of the Frozen Sparks. When you collect all 6 sparks then they will turn into the Frozen Flame, an item that will allow you to upgrade your axe.
Helheim Hel Tear (The Gleaming Bale)
You will close this Hel Tear during the main quest "Reunion". Contains: Grip of Healing Harmony (Leviathan Axe Attachment), Frozen Spark, 2x Essence of Hel (Unique Resource), 15x Dust of Realms (Unique Resource), 2000 Hacksilver.