Here is the full list of all 47 Soul Hackers 2 achievements.
Performed a Special Fusion.
Bought items at all shops and vending machines.
Completed 1 Vision Quest for all teammates.
Talked with demonic allies on recon 70 times.
Performed 100 sabbaths or more.
Performed a Normal Fusion.
Used a Commander Skill.
Experienced a meal.
Chatted with pedestrians in the city 50 times or more.
Went to a Hangout Event.
Knocked down 50 or more enemies on the field.
Neutralized the abnormality in the Soul Matrix.
Eliminated 4 enemies or more in a single attack.
Unlocked 4 or more Portals in dungeons.
Achieved victory against a Rare Enemy.
Achieved victory over a Risky Enemy.
Performed 10 or more bonus attacks.
Talked with demonic allies on recon 15 times.
Upgraded a COMP at COMP Smith.
Completed 3 or more requests/Aion Directives.
Knocked down 10 or more enemies on the field.
Received a gift from a demonic ally.
Performed a sabbath.
Hacked Arrow's soul.
Obtained all achievements, and completed Soul Hackers 2 in its entirety.
Defeated the threat waiting in the Central Line.
Defeated the threat waiting at Ozaki Hope Towers.
Watched over Ringo and her teammates' departure.
Watched over the dawn of a new era for Aion and humanity.
Went to over 40 Hangout Events.
Completed 4F of someone's Soul Matrix.
Completed 5F of someone's Soul Matrix.
Completed 85 or more requests/Aion Directives.
Unlocked 70 or more Portals in dungeons.
Performed a sabbath with a Stack of 10 or more.
Dealt over 1,000 damage to an enemy in a single hit.
Used all Commander Skills.
Defeated an enemy via repelled damage.
Won the final battle on HARD difficulty or higher.
Performed 150 or more COMP upgrades at COMP Smith.
Received 30 or more gifts from demonic allies.
Performed a Mitama Fusion.
Performed 30 or more fusions.
Created a Pixie with Megidolaon.
Filled the Demon Compendium's registry to 100% completion.
Spent over 2,000,000 yen on shopping, COMP upgrades, fusion, and Compendium costs.
Experienced 30 or more different meals.