Here is the full list of all 47 Soul Hackers 2 achievements.
Bought items at all shops and vending machines.
Knocked down 50 or more enemies on the field.
Performed 10 or more bonus attacks.
Used a Commander Skill.
Eliminated 4 enemies or more in a single attack.
Performed a Normal Fusion.
Experienced a meal.
Went to a Hangout Event.
Neutralized the abnormality in the Soul Matrix.
Unlocked 4 or more Portals in dungeons.
Achieved victory over a Risky Enemy.
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 1 Vision Quest for all teammates.
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.
Talked with demonic allies on recon 70 times.
Performed a sabbath with a Stack of 10 or more.
Performed 100 sabbaths or more.
Dealt over 1,000 damage to an enemy in a single hit.
Used all Commander Skills.
Defeated an enemy via repelled damage.
Achieved victory against a Rare Enemy.
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 Special Fusion.
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.
Chatted with pedestrians in the city 50 times or more.