The Hundred Line: Last Defense Academy - Achievements Guide

Even after completing the mandatory 100 days at The Hundred Line: Last Defense Academy, your journey is far from over. With over 100 possible endings and countless activities, prepare for an extensive playthrough!

This tactical title boasts 47 Steam achievements, ranging from unlocking hemoanima powers to experiencing every ending.

Beware: The achievement list contains significant spoilers. Proceed with caution if you prefer a spoiler-free experience.

All Achievements and How to Unlock Them

The table below details how to obtain all 47 Steam achievements. We've included tips and tricks beyond the Steam descriptions.

The Hundred Line: Last Defense Academy Achievements

Achievement Name	Unlock Method	Notes
General Gameplay Achievements
"Extreme" and "Despair"	Unlock all achievements.	This requires completing every ending, triggering all events, and maximizing team upgrades.
Extermination Complete	Defeat an Enemy Commander.	This first occurs after Day 007, introducing Commander power transfer (defaulting to Hiruko). Subsequent transfers are player-controlled.
Listen to Me!!!	Successfully persuade a character.	The first persuasion mission involves Tsubasa Kawana. Gift her the Fashionable Sick Bag and discuss her grandpa's workshop.
Special Defense Unit	Eliminate 100 enemies.	Easily achieved by targeting low-level enemies with multi-target attacks.
Battle-Worn	Use a Special Attack 100 times.	Requires over 100% Voltage. Special Attacks deal significant area damage (often inflicting Stun). Nozomi can remove Stun.
Hemoanima Prodigy	Boost hemoanima 100 times.	Boost hemoanima above 100% Voltage for various combat buffs. Likely a late-game achievement.
Welcome Back!	Return from an exploration.	Return to school from any expedition (story-driven or voluntary). Maximize exploration for resources before returning.
Irreplaceable Comrade	Reach max Bond Rank with one character.	These achievements relate to the "dating sim" elements unlocked later in the game.
Unbreakable Bonds	Reach max Bond Rank with all characters.
Mechanic	Upgrade a Class Weapon.	Upgrade a weapon after the Training Room opens (Day 031).
Master Crafter	Max level a Class Weapon.	Requires significant resources and BP.
Researcher	Develop an Enhancement.	Develop an enhancement in the Bio Lab (Day 031).
Scholar	Max level an Enhancement.	Requires resources and BP.
Tinkerer	Develop a Trap.	Develop a trap in the Metal Shop (Day 031) with Kurara on your team.
Developer	Max level a Trap.	Requires resources and BP.
Main Story Achievements
The End of Your Peaceful Life	Save Karua Kashimiya.	Story-related and unskippable during the first playthrough.
The Other Academy	Reach the Second-to-Last Defense Academy.
The Special Defense Unit, Fight!	Witness Shouma unite the teams.
Ima's Grand Return	Witness Ima's revival.
In Memoriam	Find Hiruko.
Victory and Sacrifice	Defeat the Supreme Commander.
The War is Over	Defeat Eito.
Open Sesame!	Unlock a New Story Route
Ending-Related Achievements
0: It All Starts Now	Complete the initial ending.	The first ending, but not the last if pursuing all endings.
1: Last Defense Academy 2nd Scenario	Complete the 2nd Scenario.	Requires multiple playthroughs using chapter select to make different choices at critical story points. Over 100 possible outcomes exist.
2: Reset	Complete all Reset routes.
3: Goodbye Eito	Complete all Goodbye, Eito routes.
4: Rebellion	Complete all Rebellion routes.
5: Eva	Complete all Eva routes.
6: Multiple Eitos	Complete all Multiple Eitos routes.
7: Serial Battles	Complete all Serial Battles routes.
8: Conspiracy	Complete all Conspiracy routes.
9: Casual	Complete all Casual routes.
10: Box of Blessings	Complete all Box of Blessings routes.
11: Box of Calamity	Complete all Box of Calamity routes.
12: Cult of Takumi	Complete all Cult of Takumi routes.
13: V'ehxness	Complete all V'ehxness routes.
14: Coming-of-Age	Complete all Coming-of-Age routes.
15: Retsnom	Complete all Retsnom routes.
16: S.F.	Complete all S.F. routes.
17: Romance	Complete all Romance routes.
18: Slasher	Complete all Slasher routes.
19: Comedy	Complete all Comedy routes.
20: Killing Game	Complete all Killing Game routes.
21: Mystery	Complete all Mystery routes.

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