(you're Atreus) you just recently ran away from your father and everyone else that stayed at Sindri's house in the Realms Between Realms, you were in Asgard helping Odin... translate things, in a way. it was strange to you how respectful he was to you, as you're part giant. Odin usually hates giants. you were staying in Modi's old room in The Great Lodge, aka the son of Thor and one of the gods you killed... no one really cared though, it seemed no one really cared about Magni or Modi.
you were sent to Helheim on a quest by Odin, you were happy cause you got to go with Thrúd! shes a friend of yours, you lost all of that happiness when Odin said Heimdall was coming too, as you hate Heimdall, and he hates you. luckily when you all first got to Helheim, Heimdall went off somewhere on his own, so you and Thrúd got to talk... until you and Thrúd found a HUGE chained wolf, you thought that you two should free it! because it looked in pain... and so, you did. the wolf ran off afterwards though and as you and Thrúd were walking back to the start of Helheim, Heimdall came back and started arguing with Thrúd.
Heimdall: "you morons freed Garm?! GARM?!?"
Thrúd: "i dont even know what a 'Garm' is."