Things to know before starting.

• All achievements can be unlocked on Easy difficulty.
  
• There are 2 missable achievements. The game requires 2 playthroughs for unlocking both. One complete playthrough and one until a certain point. Both playthroughs can be done in 3-4 hours.
  
• There is an achievement for completing the game with only Fire spells.
  
• There is a no death achievement, but it's not hard to do and can be done along with the Fire spells achievement.
  
• Two achievements were bugged for me and seem to be bugged for other people as well. There is a depot fix at the end of the guide.

Read the introduction story
When the game starts, press F or left click, to turn the pages. The achievement will unlock after pressing 'Yes' on the tutorial selection.
Note:- If the achievement does not unlock, check the last section of this guide.


Casting first ally spell
Will unlock during the tutorial.Cast a spell using left click.



Adding 4 of same kind of rune to a spell, first time
Can be unlocked during the tutorial. After Nereus opens the spellbook and adds a rune to the Fire ball spell, select the rune and place it on the remaining 3 empty slots. Any rune works, as long as the same ones are added to any spell.
Note:- If the achievement does not unlock, check the last section of this guide.

Complete the tutorial
Pretty straightforward.

These are all the achievements that can be unlocked on first Play-through. 'Immortal', 'Turn them to ash' and 'Darker intentions' are the three important achievements that can be done on Play-through One. Other achievements can be unlocked along the way, but these are the ones we're working towards.



Complete the entire game without a single death
No death achievement. Not as hard as it sounds. Can be done on Easy difficulty. The game is divided into 5 seasons of 5 levels each, for a total of 25 levels. Each level has between 3 to 6 waves of enemies (depending on season), except for the last level in every season which is a Boss level. Early levels can be done without the need for Healing or Mana potions, but keep some just in case. You'll have more than enough money for everything, so keep some potions with you (They are also required for achievements). Achievement will unlock after defeating Parthax.



Complete entire game using only fire as primary element
Each spell is derived from an element. Some spells are derived from two elements. The elemental type of a spell can seen by moving the mouse cursor over the spell, in the spellbook. For this achievement, make sure that all the spells you use have Fire as the primary element.
Keeping other elemental spells in your Spell bar is fine as long as you don't use them. Swap them out for Fire spells as soon as you get them. Some spells have fire in them but their primary elements are different. (eg.Winterflame has Cold as primary element)
In the early levels you can use the default spell Fire ball, but you'll have to use other fire spells later on (eg. Cherufe, Flame pulse, Flame dash). Although enemies have different elemental weakness in all seasons, they are not hard to kill. Achievement will unlock after defeating Parthax.



Gain Blood magic
This is one of the missable achievements. After defeating the boss in every season, we have the choice, to kill or spare the boss. An icon of weighing scales is shown on the top right. We can get this achievement by killing all the bosses in seasons Spring,Summer,Fall and Winter. One shot is enough to kill them. After completing Winter season and going back to the Hall of Preparation, Parthax is waiting to talk to us. The achievement unlocks soon afterwards.



Complete a challenge with only fire spells equipped
Equip only Fire spells and Fire Arch spell in the Spell bar and complete a level (Spring 1 is the easiest level). Fire spells are Fire ball, Cherufe, Flame dash and Flame nova. The spells we get after completing levels are random, but since we are going for 'Turn them to ash' achievement, we should be able to get it in Playthrough One.
Note:- To equip any Arch spell, right click and hold the spell, move mouse cursor to Arch spell slot and left click.



Destroy all breakable objects for a season
At the beginning of the game or any new season breakable items crates and vases are spawned at some locations. Breaking all of those breakable items in a season will give you the achievement. Breaking items during one season is enough, for unlocking the achievement. The item spawns don't seem to vary between seasons, so they can be collected at any time. Most of the items are in the Hall of Preparation, but one set of crates is at the terrace. You go to the terrace after clearing every level.
Note:- The Vase in the shopkeepers room is the only one that respawns every time you enter the room.



Find all objects for a season
At the beginning of the game or any new season certain items are spawned which when collected give knowledge (XP). Collecting all the collectable objects in a season will give you the achievement. You only have to collect all the items from one season for the achievement. The item spawns don't seem to vary between seasons, so they can be collected at any time. All collectable items are found in the Hall of Preparation.
Note:- 2 potions spawn on a table near the level select




Open a chest with riches
Go to the shopkeepers room (middle door in the Hall of Preparation). Use dash to move behind the counter. Press F to open the chest. If the chest has money, then you'll unlock the achievement. New chests are spawned at the beginning of a season and stay open/closed for the rest of the season. To open a new chest, you have to move to the next season



Open an empty chest
Go to the shopkeepers room (middle door in the rest area). Use dash to move behind the counter. Press F to open the chest. If the chest is empty, then you'll unlock the achievement. New chests are spawned at the beginning of a season and stay open/closed for the rest of the season. To open a new chest, you have to move to the next season



Damage more than 5 enemies with the effect of an explosive rune
Buy an Explosive rune from the shopkeeper. You'll have to play 1 or 2 levels, to get the money for it. Add the explosive rune to the Fire ball spell. This achievement should unlock during normal gameplay. But if it doesn't, stand still and let the enemies swarm you and then use fire ball.

Complete spring season
Achievement will unlock after defeating Mounorian.


Defeat Mounorian
Pretty straightforward fight. He'll summon enemies one time near the end. Use potions if needed.


Complete summer season
Achievement will unlock after defeating Feykir.


Defeat Feykir
Pretty straightforward fight. He'll summon enemies one time near the end. Use potions if needed.


Complete fall season
Achievement will unlock after defeating Nereus.


Defeat Nereus
Pretty straightforward fight. He'll summon enemies one time near the end. His arch spell pulls you towards the centre. Use dash to move towards the edges. Use potions if needed.


Complete winter season
Achievement will unlock after defeating Hrist.


Defeat Hrist
Pretty straightforward fight. She'll summon enemies one time near the end. Use potions if needed.


Complete blood moon season
Achievement will unlock after defeating Parthax.


Defeat Parthax
Pretty straightforward fight. He'll summon enemies one time near the end. Use potions if needed.


After Parthax' death
Achievement will unlock after exiting the last level.


Defeat 1000 enemies
This achievement should unlock naturally during Playthrough One, along with 'Ruthless spellslinger' and 'Slayer'.


Defeat 500 enemies
Refer to 'Total Extinction'


Defeat 100 enemies
Refer to 'Total Extinction'


Collect 20.000 gold
This achievment should unlock naturally during Playthrough One, along with 'Rolling in it', 'Hoarder' and 'Collector'. The gold amount needed is cumulative. You can spend gold to buy potions and runes.


Collect 10.000 gold
Refer to 'Scrooged'


Collect 5.000 gold
Refer to 'Scrooged'


Collect 2.000 gold
Refer to 'Scrooged'


Collect 99 mana potions
You can buy mana potions from shopkeeper. You should have enough money to buy all the potions, by the end of Playthrough One. The achievements 'Secret of mana' and 'Keeping Stock' should unlock as well.


Collect 50 mana potions
Refer to 'Flood of wisdom'


Collect 10 mana potions
Refer to 'Flood of wisdom'


Collect 99 health potions
You can buy health potions from shopkeeper. You should have enough money to buy all the potions, by the end of Playthrough One. The achievements 'Great fairy fountain' and 'Kisses for the bruises' should unlock as well.


Collect 50 health potions
Refer to 'A healthy dosage'


Collect 10 health potions
Refer to 'A healthy dosage'


Purchasing first rune
You can purchase runes from the shopkeeper


Purchase all runes available
You can purchase runes from the shopkeeper. Only the available runes are required for the achievement. If Blood magic is acquired, then Blood runes can be unlocked. The achievement will unlock upon buying all the runes, including Blood runes. Similarly if Light magic is acquired, then this achievement will unlock upon buying all the runes, including Light runes.

Playthrough Two is required only for the second missable achievement 'The future brightens'. We can do the remaining achievements along the way.


Gain light magic
This is one of the missable achievements. After defeating the boss in every season, we have the choice, to kill or spare the boss. An icon of weighing scales is shown on the top right. We can get this achievement by sparing all the bosses in seasons Spring,Summer,Fall and Winter. DO NOT kill bosses. After completing Winter season and going back to the rest area, Parthax is waiting to talk to us. The achievement unlocks soon afterwards. Playing the Blood moon season is not necessary.



Complete a challenge with only earth spells equipped
Equip only Earth spells and Earth Arch spell in the spell bar and complete a level (Spring 1 is the easiest level). Earth spells are Stone Barrage, Earthspikes, Bloom, Grootslang and Meteor strike.
Note:- To equip any Arch spell, right click and hold the spell, move mouse cursor to Arch spell slot and left click.


Complete a challenge with only frost spells equipped
Equip only Frost spells and Frost Arch spell in the spell bar and complete a level (Spring 1 is the easiest level). Frost spells are Ice shards, Hrimthur, Absolute zero, Frost shield and Winterflame.
Note:- To equip any Arch spell, right click and hold the spell, move mouse cursor to Arch spell slot and left click.


Complete a challenge with only arcane spells equipped
Equip only Arcane spells and Arcane Arch spell in the spell bar and complete a level (Spring 1 is the easiest level). Arcane spells are Eye for an eye, Hail storm, Whirlpool, Charybdis and Lightning strike.
Note:- To equip any Arch spell, right click and hold the spell, move mouse cursor to Arch spell slot and left click.



Transform 10 enemies into chickens
Buy Polymorph rune from the shopkeeper. Add the rune to all 4 rune slots of any arcane spell to increase the chance of enemies transforming. Play any level and use the spell with polymorph rune, until you get 10 transformations, then the achievement should unlock.



Dies 10 times
To get this achievement start a level and do nothing. Wait for enemies to kill you and then restart the level. Repeat until you have this achievement. The achievements 'Third time's the charm' and 'Beginning of ends' should unlock as well.



Dies 3 times
Refer to 'Accustomed to death'



First death
Refer to 'Accustomed to death'

Two achievements 'Hidden potential' and 'A page turned' didn't unlock for me, so I used DepotDownloader to download an old version of the game. Lylat has written a guide on 'How to download depots using DepotDownloader. LINK

• Follow the linked guide, for instructions on how to download and use DepotDownloader.
  
• Use the following commands for downloading a working depot for Gift of Parthax.
  
  dotnet DepotDownloader.dll -username YOURUSERNAME -password YOURPASSWORD -app 795610 -depot 795611 -manifest 1463001528113202255
• Open the folder where the game is installed and replace the game files with the ones downloaded using DepotDownloader.
  
• Play the game through steam and follow the guide to unlock the two achievements.

Thank you for reading my guide.
All the information given in this guide correct to my knowledge. If you find any errors, please let me know