Full list of all 28 BPM: BULLETS PER MINUTE achievements. It takes around 25-30 hours to unlock all of the achievements in the base game on Windows.
The base game contains 17 achievements, and there is 1 DLC pack containing 11 achievements.
Defeated Nidhogg with Skuld on easy.
Defeated Nidhogg with Geri on easy.
Defeated Nidhogg with Herfjötur on easy.
Defeated Nidhogg with Rún on easy.
Defeated Nidhogg with Sanngriðr. Well done!
Complete the game on hard as Skuld.
Complete the game on hard as Geri.
Complete the game on hard as Herfjötur.
Complete the game on hard as Rún.
Complete the game on hard as Sanngriðr. Impressive.
Completed Sanngriðr on Hellish.