Complete the indicated task to unlock the achievement.

Achievement	How to unlock
...But Really Only Half Way Up	Light up half of the total number of shrines.
A Blessing From The Lord!	Be saved from falling by a divine intervention.
A Gift of Darkness	Acquire the Dark Crash.
A Light In The Darkness	Light the first Shrine.
A Silent Terror	Reach Dvergrheim.
All I Needed Was Two Barrels	Beat the game under one hour.
All Shall Rejoice	Light up every shrine.
Back To The Bog	After reaching the final level, fall all the way back to the first.
Beat You at Your Own Game	Finish the game faster than one of the devs.
Bonded by The Spirit	Play with a friend.
Caution, Slippery Floor	Reach Ymir's Rest.
Cloudy With a Chance of Lightning	Acquire the Thunderstick.
Domain of Hellfire	Reach Tartarus.
Don't Lick it	Acquire the Winter's Grace.
Dragon Repellent	Acquire the Slumbering Anger.
Endgame	Reach The Red Cathedral.
Forged in Fire	Acquire the Red Doom.
God-King	Bring back the sunlight.
Great. What Now?	Run out of shells.
Ka-ching	Acquire Shotcalibur.
May I offer you an egg in these trying times?	Fire 100 000 shells.
My Ears Are Still Ringing	Fire 10 000 shells.
Out of The Abyss	Reach The Nether.
Relic of Heresy	Acquire the Bedrock Blaster.
Rookie	Fire hundred shells.
The Eastern Wind	Acquire the Restless Redeemer.
The Grand Collection	Acquire every ancient shotgun.
The Sea of Stranded Souls	Reach Charon's Lighthouse.
There Can Be Only One	Unknown.
They Said It Can't Be Done...	Beat the game under ten minutes.
What Happened Here?	Reach The Desolation.
Where Do They Even Come From?	Fire thousand shells.