Here is the God Of War Ragnarök In The Dead Of Night Favour where we help you find and take down a noxious Dreki in The Crater in Vanaheim.
The Dreki will count towards one of the Crater Hunts as you work towards Invasive Species and is considered a Dragon Hunt on your World Overview.
In order to get to The Crater you will firstly need to complete the Creatures of Prophecy main story quest where you rescue Freyr then, on your back to the Mystic Gateway you will come across Lúnda’s dog, Helka beginning the Scent of Survival Favour, which, once completed, will land you in The Crater.
Before you can start the In The Dead Of Night Favour, you will firstly need to complete the Return of the River Favour bringing the waters back to the area then finally, ensure that it is night time in Vanaheim (you will need to make it night time along the way to completing the Return of the River Favour).
Once all this has been done, assuming you are atop the dam still, take the lift down then row the boat round to the left and through the small passage back in to The Plains area.
Take a left out of the cavern following the river along to the dock then drop down the ledge in front of you and get ready for a tough fight against one of the toughest Dreki in the game.
What makes it so tough is it can inflict poison on you very quickly with spray, spitballs and biting attacks.
It will also come at you with clawing, tail swiping and lunging attacks all designed to ruin your day so make good use of your parries and blocking whilst working its health bar down.
Once the Dreki has been defeated you will complete the In The Dead of Night Favour.