Various Trophies...
	Yuuki...

Complete the following tasks to unlock PlayStation 4 trophy rewards.

Trophy	How to unlock
A Ghastly Hazing (Bronze)	Defeat the 76th floor boss.
A Sight for Sore Eyes (Bronze)	Defeat the 95th floor boss.
Astral Quaking in His Boots (Bronze)	Defeat the 79th floor boss.
Batting an Eye (Bronze)	Defeat the 88th floor boss.
Beater (Bronze)	Clear the tutorial.
Beta Tester (Silver)	Obtain all last attack bonuses.
Blazed Away (Bronze)	Defeat the 94th floor boss.
Bringing Order to Chaos (Bronze)	Defeat the 92nd floor boss.
Claw on the Floor (Bronze)	Defeat the 77th floor boss.
Col Tycoon (Bronze)	Earn a hundred million Col.
Congratulations, Kirito (Bronze)	Defeat the last boss on the 100th floor.
Creeper Hit (Bronze)	Defeat the 93rd floor boss.
Cut down to Scythe (Bronze)	Defeat the 80th floor boss.
Debug Complete (Silver)	Clear a set number of Hollow Missions.
Despite All His Rage (Bronze)	Defeat the 85th floor boss.
Foul Play (Bronze)	Defeat the 89th floor boss.
Gazed and Confused (Bronze)	Defeat the 91st floor boss.
High-Ranking Tester (Silver)	Clear a set number of elements on the Implementation List.
Hollowed Out: Administration Area (Bronze)	Defeat the Administration Area boss.
Hollowed Out: Alevaste Otherworld (Bronze)	Defeat the Alevaste Otherworld boss.
Hollowed Out: Bastia Gate (Bronze)	Defeat the Bastia Gate boss.
Hollowed Out: Driogeer Skycaves (Bronze)	Defeat the Driogeer Skycaves boss.
Hollowed Out: Graceleaf Bay (Bronze)	Defeat the Graceleaf Bay boss.
Hollowed Out: Selvendys Forest (Bronze)	Defeat the Selvendys Forest boss.
It's Not What It Looks Like! (Silver)	Reach maximum affinity with all heroines.
Knightfall (Bronze)	Defeat the 81st floor boss.
Locking Horns (Bronze)	Defeat the 78th floor boss.
Lords of Hell (Bronze)	Defeat the 99th floor boss.
Memories (Silver)	Complete all galleries.
No Fury Like a Horn Scorned (Bronze)	Defeat the 83rd floor boss.
No One Left Behind (Silver)	Clear the game without losing any Assault Team members.
None the Kaiser (Bronze)	Defeat the 98th floor boss.
Not Today (Bronze)	Defeat the 97th floor boss.
Not a Legacy to Stand On (Bronze)	Defeat the 82nd floor boss.
Obtain all trophies. (Platinum)	Obtain all trophies.
Once Upon a Time in Aincrad (Bronze)	Defeat the 96th floor boss.
Overruled (Bronze)	Defeat the 90th floor boss.
Party Play Isn't So Bad (Bronze)	Participate in multiplayer games for over 20 hours.
Put to the Test (Bronze)	Defeat the boss of the high-difficulty test area.
Queen for a Slay (Bronze)	Defeat the 84th floor boss.
Radiance Beater (Bronze)	Defeat the 87th floor boss.
Regular at the Smithy (Bronze)	Successfully enhance a weapon 200 times.
Thank You for Playing (Bronze)	Complete the game with over 100 hours of play time.
That's What Makes MMOs that Use a Level System So Unfair (Bronze)	Take Kirito up to level 200 or higher.
The Absolute Sword (Gold)	Defeat Yuuki.
The Beast Tamer (Bronze)	Reach maximum affinity with Silica.
The Fairy (Bronze)	Reach maximum affinity with Leafa.
The King Is (Un)dead, Long Live the King (Bronze)	Defeat the 86th floor boss.
The Lightning Flash (Bronze)	Reach maximum affinity with Asuna.
The Master Macer (Bronze)	Reach maximum affinity with Lisbeth.
The Shadow (Bronze)	Defeat Hollow Kirito.
The Sniper (Bronze)	Reach maximum affinity with Sinon.
The Treasure Hunter (Bronze)	Reach maximum affinity with Philia.
This Is a Game, But It Isn't Something You Play (Gold)	Defeat 100 HNM-class monsters in multiplayer.
Wow... (Bronze)	Defeat PoH.

You must first clear the hollow area story line, and then after the final battle of the main story line you will have the option to stay and investigate the area. If you choose to investigate you will then be challenged to battle by Yuuki, defeat her and she will be unlocked in the new game+ mode.