Chapter 1 to the final chapter is pretty straightforward, just play through everything until you get to the postgame, which is Chapter Ø.

Progressing through Chapter Ø is doing a bunch of key quests that has the red icon with crossed swords. The quests are on Maniac difficulty so you should be considerably levelled up at this point to tackle them.

Once you finish off all of the key quests, you will unlock a rank up quest called "The Final Report" where you have to fight a level 120 Bahamut Versa that has 2 damage checks in the fight, so save your SBA for them.


Complete Chapter 1 of the main story

Complete Chapter 2 of the main story

Complete Chapter 3 of the main story

Complete Chapter 4 of the main story

Complete Chapter 5 of the main story

Complete Chapter 6 of the main story

Complete Chapter 7 of the main story

Complete Chapter 8 of the main story

Complete Chapter 9 of the main story

Complete Final Chapter of the main story

Complete Chapter Ø of the main story

Get some practice in with Sir Barrold

From the town, enter Grandcypher from the docks and find the training dummy at the front of the ship.

Enter link time in battle (excluding Training)

You will need to get 100% link level and once everyone hits their link attack you will enter link time.

Use skills 50 times in battles

Self-explanatory.

Trigger a full burst (excluding certain battles)

To trigger a full burst, everyone in the party must have enough SBA (Skybound Arts) meter to do in sequence from each other. After each burst, other party members will gain 10% SBA meter. So one could have 100%, second party member 90%, third party member 80% and last party member 70% to do a full burst when done in sequence.

Activate Chain bursts 100 times in battles (excluding certain battles)

You have to do at least 2 SBA in sequence to trigger a chain burst so you don't have to have everyone at 100% SBA. Ideally having 4 SBAs from the entire party will deal the most damage.

Use buffing skills to grant status effects to allies 20 times in battles

Self-explanatory. Use skills that buff your team such as main character's Rage which increases ATK.

Use debuffing skills to inflict status ailments on foes 20 times in battle

Self-explantory. Use skills to debuff enemies such as main character's Armor Break that decreases DEF or Miserable Mist that decreases both ATK and DEF

Unleash Skybound Arts 10 times in battles (excluding certain battles)

Self-explanatory. Get your SBA meter to 100% and you can use it on an enemy. It will put you in 80% once you activate it so make sure you don't miss it and have to gain back SBA meter.

Use 50 potions

Self-explanatory, use the potions on the left side of your screen.

Revive allies 5 times

Self-explanatory. Revive your teammates that are in critical condition. You have run up to downed teammates to revive them faster. There are some revive skills such as Cagliostro's Rhizomata or sigils such as autorevive. If you are downed yourself you can mash buttons to speed up your own recovery.

Put Foes into Break 5 times in battles (excluding certain battles)

On the lower right side of the bar for bosses is their mode bar. Once it's filled up they will go into Overdrive and you have to deal damage to make the mode bar go down. Once it's completely down they will go into Break.

Destroy all guide projectiles of an enemy barrage using a single Charged Shot from an ether cannon in Chapter 4 of the main story

During Chapter 4 you will operate an ether cannon. There will be 4 big red cannons on the enemy ship that will shoot up big red orb projectiles. These will split into smaller projectiles. Once they're split, they won't count towards the achievement. If you missed it you can restart from checkpoint and try again.



Destroy all enemy cannons in Chapter 4 of the main story

In Chapter 4 you will board 3 enemy ships. On each enemy ship there will be 4 cannons. There are 2 cannons on left side and right side of the ship. Destroy these before you destroy the big battery at the back of the ship.

Defeat Angra Mainyu without taking any damage while controlling Proto Bahamut in Chapter 8 of the main story.

Retrying for this achievement is pretty annoying because you have to go through the scripted loss fights.

You have 4 different attacks, Light Blast, Attack, Tackle and Reginleiv. Light Blast is pretty useless here so you will pretty much just use the 3 other moves.

Actually you can fully charge up Light Blast quickly after doing 3 normal attacks, similarly to Cagliostro's Collapse or Io's quick charge.

Reginleiv is your strongest move and deals the most damage, it will keep the boss stunlocked but you can't use it forever and have to let it recharge. You can avoid the cooldown by avoiding completely using up the bar.

Tackle is to move quickly towards the boss if you're far away from dodging attacks.

Attack is a combo attack. You keep pressing it until you do the finisher, but it takes a while to do the entire combo so be ready to dodge.

Angra Mainyu has 3 different moves, dark purple laser attack, hand attack which shows their strings and a barrier. Both the laser attack and hand attacks can be dodged by going left or right if you're close to Angra Mainyu. The barrier can be destroyed by using Reginleiv so make sure you don't put it into cooldown.

Defeat Bahamut Versa Omega without taking any damage while controlling Proto Bahamut in Chapter Ø of the main story.

Fortunately, this fight is quick to retry in case you fail.
Bahamut has four different phases, but two of them are flying phases which are easy. The attacks you should be looking out for is his 3 combo attack with left, right and then tail attack. And another one is where he charges up his Light of the Deliverance which you need the combo finisher or do a tackle during your attack combo.

Deal more than 999,999 damage with a chain burst in battle

You will get this achievement eventually when you get stronger. Make sure you have all 4 SBAs ready for the strongest chain burst.

Complete the quest "The Final Report"

After you finish all of the Key Maniac quests, you will unlock The Final Report, which is a proud difficulty quest. This fight is for the most part the same except Bahamut hits much harder and has two damage checks which you should save your SBA for. Both of the damage checks will be after you break his Overdrive phase.

Defeat primal beasts 100 times

Self-explanatory. You will get this achievement from grinding for materials. The primal beasts are Furycane, Managamr, Excavallion, Vulkan Bolla and Angra Mainyu.

Use an emote

Self-explanatory. Use an emote from the communication option.

Complete a side quest for the first time

Talk to a NPC with a side quest while in town and finish it. You can find who has a side quest with the navigation bar on top of the screen while in town.

Use Siero's Treasure Trade to complete 10 trades

Self-explanatory. While in the town, go to Siero's Knickknack Shack and use the Treasure Trade option.

Unlock a character action node from Masteries for the first time

Self-explanatory. On the main menu select Masteries and unlock a node there.

Unlock a new character

To unlock a new character, you will need a crewmate card and then go to Siero to unlock them. You can buy the crewmate card through quests but you will get more from quests later on. You should avoid unlocking characters you're not gonna use because they can level up to level 60 once you progress enough in the game so you don't have to spend resources afterwards.

Complete a fate episode prologue for the first time

While in town, go to the Quest Counter and then select fate episodes and complete a prologue of a character. You will get stat boosts from completing episodes so you should be doing them.

Complete a fate episode epilogue

You will need to progress the main story and level up the character to unlock further fate episodes so this one will be a little late.

Uncap a weapon at the blacksmith

While in town, you need to go to the blacksmith and then uncap a weapon with the necessary materials. You don't have to level up your weapon completely to uncap it.

Sell 10 sigils

You can sell sigils at the blacksmith.

Get an appraisal from Zathba

You will need to progress enough in the game to meet Zathba at Seedhollow and afterwards get a Curio from quests. He will then be available to appraise the Curio at his bar.

Achieve an S++ quest evaluation for the first time

You will eventually get this achievement naturally. You will need to finish up the quest quickly enough while also meeting all the challenges for the best chance for S++ evaluation. You don't have to do every challenge but it makes it more simple.

Open 50 treasure chests (excluding town chests)

During quests you will find treasure chests. You don't have to worry about missing chests because you can go back to main story chapters post game and find them afterwards.

Open all locked treasure chests

There will be locked treasure chests that you need keys to unlock them with. You will get keys from quests and side quests.

Find 30 archive entries

You will need to find purple light which are archive entries during quests or while in town.

Find 20 wee pincers

During main story quests, there will be wee pincers crabs spread around. You don't have to worry about missing them because you can go back, but they can be hard to find.

Acquire a total of 100,000 rupies

You will get this achievement eventually. You can sell glitterstones from quests to get more rupies.

Raise a character to level 100

Self-explanatory. You will get this pretty naturally or you can speed it up by using EXP books and level up a character to level 100.

Unlock all characters

You will have 6 characters initially and need 14 crewmate cards in total to unlock them. You will get crewmate cards from main story and quests afterwards so you only have to buy one crewmate card from Siero.

Complete all characters' fate episodes, including their epilogues

Self-explanatory. If you waited until the characters were level 60 when you unlocked them, you can just breeze through all of the fate episodes in 1-2 hours or so.

Complete all side quests

You will need to complete all 110 side quests which also consists of getting all 45 wee pincers.
Make sure you check inside the church at Folca, as it doesn't show up in the navigation bar on top unless you're inside.

Unlock the power of an Ascension weapon for the first time

At the blacksmith, you can forge a weapon that's an Ascension weapon. You can see if it's an Ascension weapon or not above the weapon art at forge weapon. You will need to get the Ascension weapon to level 150 before you unlock the ability to upgrade it further by talking to Siero.

Complete the main story up to Chapter Ø on Ultimate difficulty

You will need to complete every main story chapter on Ultimate difficulty. You should be level 100 by now because the enemies on Ultimate difficulty are level 120.

Fill in every Field Notes entry in Lyria's Journal

This will be your last achievement due to the requirements you need to do for unlock every entry.

Obtain all achievements

Congratulations!

All the materials you need for Item Delivery side quests:
Golem Finger x3
Prism Chip x5
High-grade Scrap x6
Whorlshroom x6
Frosted Flower x4
Salamander Egg x3
Cobblestone x15
Snow Pillow x3
Aviaeth Prayer Book x3
Desert Ash x15
Red Dragon Scale x10
Blue Dragon Scale x10
Brown Dragon Scale x10
Green Dragon Scale x10
Fortitude Shard x10
Fortitude Crystal (S)
Fortitude Crystal (M)
Fortitude Crystal (L) x3
Flawed Prism x5
Flawless Prism x16
Fire Shard x10
Earth Shard x10
Water Shard x10
Wind Shard x10
Damaged Tail Fin x6
Disast Ore x80
Eternal Snowflake x81
Desert Ash x15
Magma Worm x15
Ice Spire x15
Busted Manikin x15
Red-Hot Cactus x3
Machine Unit x2
Welkin Reflection x10
Bleak Bone
Tempestone x30
Fornax Stone x15
Vermillion Powder x15
Griffin Talon x2
Light Shard x5
Dark Shard x5
Phondam Sulfur
Bloomsword Hilt
Astral Matter
Valley Bloom
Greatshield Fragment x2

Unfortunately there's a bug where your achievement doesn't unlock despite meeting the requirements. I personally had this happen to me with the "Fate Can't Wait" and "Reminiscence" achievement. From reading online, it seems the achievements might not unlock due to losing connection to Steam. I tried to re-do a Fate episode but that didn't trigger the achievement and there was no way for me to re-do the achievement on the current save.

Fortunately or unfortunately, there's a workaround, and that's to re-do the achievement before you meet the requirement in a previous save. And the previous save part is the unfortunate part because most people most likely do not make backups of their saves. I made a backup of my save before I got "Nothing Is Impossible!", "Unlocked and Unloaded", "Reminiscence" and "Fate Can't Wait" achievements. I left Yodarha's weapons unforged and left one last Fate Episode for him on that backup save. After trying for a while to get the bugged out achievements. I just went back to my backup save and did the achievements there and only then did the achievements count on Steam.

So if you have a problem unlocking achievements despite meeting the requirements, it looks like you just have to re-do the achievements on a different save or have made a backup save for it like I did. This looks like something Cygames should be fixing though.

It should be fixed now as of March 14th update version 1.1.1.