Here is the full list of all 36 Jotun achievements.
The base game contains 33 achievements, and there is 1 DLC pack containing 3 achievements.
Beat the game 100%.
Defeat Odin without using any God Powers.
Defeat Odin without taking any damage.
Defeat Odin without destroying any spears
Defeat Hagalaz without using any God Powers.
Defeat Hagalaz in under 60 seconds.
Defeat Hagalaz without knocking her down.
Defeat Hagalaz without taking any damage.
Defeat Kaunan without taking any damage.
Defeat Kaunan in under 80 seconds.
Defeat Fé without taking any damage.
Defeat Fé in under 25 seconds.
Defeat Jera in under 25 seconds.
Defeat Isa in under 60 seconds.
Defeat Isa without taking any damage.
Defeat Fé without using any God Powers.
Defeat Jera without using any God Powers.
Defeat Odin in under 60 seconds.
Defeat Kaunan without using any God Powers.
Defeat Kaunan while at less than 10% health.
Defeat Fé without attacking her in melee.
Defeat Isa using only the icebergs.
Defeat Isa without using any God Powers.
Defeat Jera without taking any damage.
Defeat Jera without killing a single vine.
Defeat Odin, the Allfather.
Defeat Hagalaz, the mesmerizing Storm jotun.
Find all of the God Shrines.
Find all of Ithunn's Apples.
Defeat Isa, the mighty Winter jotun.
Defeat Kaunan, the terrifying Fire jotun.
Defeat Fé, the magnificent Cave jotun.
Defeat Jera, the unmerciful Nature jotun.
Beat Valhalla Mode without taking any damage.
Beat Valhalla Mode without using God Powers.
Beat Valhalla Mode.