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