Here is the full list of all 61 War of the Human Tanks achievements.
Develop 30 Modules
Win a Battle Using Only Melee Attacks
Clear Fruit Bat Bonus Maps
Defeat a Horde of Cats
Overcome Megumi's Counterattack
Receive a Special Token
Successfully Intercept 10 Attacks
Kill Five Enemy Units with a Scout Tank in a Single Battle
For Those Who Saw It All
Complete Episode 13: "The Daihon'ei Rebel Unit"
Destroy 500 Enemy Tanks
Complete Episode 13: "Miou Liberation Front"
Achieve Ten Speed Bonuses
Develop the Smart Radar
Ensure a Safe Return for at Least 12 Wounded Units
Win 25 Massive Victories
Kill All Enemies by Using the Same Unit
Kill at Least One Enemy Tank Using Each of Your Tanks in a Battle
Win a Battle Using Only Heshiko
Complete Episode 13: "The Will to Fight"
Complete Episode 12: "The End of the Decisive Battle in Shinjuku"
Develop the Infinite-Range Battery
Complete Episode 10: "The Meow-Meow Naval Battle"
Defeat the... Tank?
Complete Episode 9: "Kurara Iikura Strikes Back"
Complete Episode 5: "Pass Satou's Test"
Win the Battle for Yumishirogahara Before 5 Minutes Elapse (New Game only)
Kill Five Enemy Tanks in a Single Attack
Finish War of the Human Tanks
Complete Episode 13: "Charge! Human Tanks"
Complete Assault Research Line
Assemble 100 Tanks
Complete Scout Research Line
Complete Command Research Line
Complete Barrage Research Line
Complete Episode 12: "What the Sword is for"
Complete Episode 11: "Infiltrate the Nagoya Tower"
Complete Shock Research Line
Defeat Mr. Cat
Defeat Mr. Cat (New Game Only)
Achieve a Wipeout Using Only Shock Tank Attacks
Achieve Three Wipeouts
Equip a Command Tank with Curry and Cola
Fight 50 Battles
Collect 1.000.000 Crates from Battles
Complete Episode 10: "Conquer the Northern Area"
Defeat the Tank-Model Tank
Complete Interceptor Research Line
Complete Episode 9: "Operation: White Wall"
Complete Episode 8: "Annihilate All Stray Tanks"
Complete Episode 7: "Under the Flag from the Past"
Complete Episode 6: "The General from Hell"
Destroy 25 Enemy Units Without Seeing Them First
Complete Episode 5: "The Blue Sea and the New Tank"
Complete Episode 4: "Defeat the Conspiracy and Conquer Castle Matsumoto"
Complete Episode 3: "Attack the Armored Train!"
Win the Battle for Matsumoto Railway Without Using Battery Tanks (New Game Only)
Complete Episode 2: "Imperial-Capital Conquering Regiment"
Win a Battle Without Losing a Single Unit
Achieve a Massive Victory
Complete Episode 1: "Daihon'ei Unfrozen"