This guide will not really spoil you as the game focus more on the mechanics than the story itself. Thus I recommend to watch the entirety of this guide before playing the game.

This is not a walkthrough but a strategic guide about getting all of the achievements in the most effective way. You may find a helpful video I did for the most infrequent one aka "Race the Golden Throne" in the last part of this guide though.

Keep in mind you can redo a chapter ONLY after fully completing it in the menu ("Chapters"). This is really important you get aware that you CANNOT CURRENTLY choose the level you want in the selected chapter (devs promised they might add this option in the future). That's why I recommend to do the achievements of the third section of this guide AT THE RIGHT TIME if you want to finish the game the fastest way.

Jörmungandr
Complete Midgardr


You will get this one by finishing the very first chapter. Completing this one will give you access to a map and 3 other chapters. You can freely stop a chapter and begin another one as the game autosave after completing a level.

Ymir
Complete Jötunheimr



Baldr
Complete Helgardhr



Níðhöggr
Complete Nifleheimr


You will get those achievements for each of the next third chapters. Complete the 3 chapters to gain access to two new ones: Múspellsheimr and Vanaheimr.

Surtr
Complete Múspellsheimr



Freyja
Complete Vanaheimr


By completing those two chapters you will gain access to two another chapters, a "dark" world and a "light" world: Svártalfheimr Ālfheimr & Ālfheimr.

Ivaldi
Complete Svártalfheimr



Völundr
Complete Ālfheimr


By completing these two chapters, you will gain access to the last (and certainly most) difficult chapter : Asgard.

Frigg
Complete Ásgarð

Dipper
Collect 9 Feathers while underwater


Each time you grab a feather underwater the counter will add +1. This will eventually happen in the 4th chapter, Nifleheimr. Dying or restarting won't reset your counter. As you may finish Nifleheimr while not getting enough feathers, I recommend you to "farm" for the achievement in this level (grab the feather, press start and reset the level, repeat 8 times):


Circus Show
Stand on top a rolling boulder for more than 3 seconds


The best place I found to roll on a boulder enough for the achievement to pop up is there (second chapter, Jötunheimr):

Push the boulder to the right, a bit on the slope, jump on it and try to reach the left without dropping.

Orbicide
Free 9 Orb spirits


In order to free a spirit, you have to break it while stepping on it with the character. Oddly, I have only found a level (Helgardhr, third chapter) where I could "free" a spirit. Free him, restart the level, repeat 8 times:


Quadruple Futhark
Light up 4 Runes at the same time


You may randomly get it in Vanaheimr or Asgard by matching 4 runes. I got it in Vanaheimr in this level:


Vertically Challenged
Finish 9 levels without jumping


As you might get it after beating the game, I recommend to redo the very first level (by selecting Midgardr in the menu) how many times as needed to get the achievement:


Race the Golden Throne
Finish the last level in 45 seconds or less


THIS IS THE ACHIEVEMENT YOU DON'T WANT TO MISS! Why ? Because, at the moment I have written this guide, you cannot select the desired level (and this one is the last). This means if you miss this achievement, you will have to redo all the Asgard chapter over again which may be very frustrating! I f you meet this level below, you will need to train hard to beat the challenge. I recommend to use a timer next to you. Also, you can grab the feather if you'r not sure about your time, and if the achievement doesn't pop, press QUICKLY start and restart the level. If you don't want to search the best way to do it, please watch my video below.

You cannot see here, but the achievement pops up for me half a second after I pressed start.

You have completed the game and all of the achievements above? Relax, you can serenely focus on these ones now:

Necromaniac
Die in all the different ways possible


You may not get the achievement before, because you need to die in 5 different ways and in one game session! But don't worry, you will now get it in a minute:

- Load Múspellsheimr and get burnt by lava in the first level. Start>Go to menu>Select chapter
- Load Jötunheimr and get smashed by a rock in the first level. Start>Go to menu>Select chapter
- Load Midgardr and reach the first level where you meet spikes. Step on it and die. Start>Go to menu>Select chapter
- Load Helgardhr and try to get crushed by a moving platform. Start>Go to menu>Select
- Load Svártalfheimr and get murdered by a dark beam in the first level. Achievement unlocked.

Humor the Devs
Watch the whole credits at normal speed from the Chapters Menu


Self explanatory: you can get it anytime you want.

Fiðr Lover
Collect 999 Feathers


This is your very last achievement. After beating the game I got almost 700 feathers. Each time you grab a feather this adds to the counter, even if you die. Thus, you will get "more" than the 77 levels have to offer! For the rest, I have found a good spot to farm feathers on Helgardhr:


Spin the tile from the left, two times. Grab the nearest feathers (up to 6) and restart. Repeat as many times as needed.

The purpose of this guide was to avoid some frustrations. I hope you will enjoy the game as I enjoyed myself. If you struggle to find the solution of a level, I recommend you to stop the game for the day and to try it the following day with a fresh mind! :)
Don't underestimate the power of a good night for your brain!

As english is not my mothertongue, feel free to correct my grammar! I will try to answer any questions, feel free to leave a comment!