By going for the Miou endings first, you can get the following 12 achievements..
Find Your Calling
Complete Episode 1: "Daihon'ei Unfrozen"
Complete Episode 2: "Imperial-Capital Conquering Regiment"
Complete Episode 3: "Attack the Armored Train!"
Complete Episode 4: "Defeat the Conspiracy and Conquer Castle Matsumoto"
Complete Episode 5: "The Blue Sea and the New Tank"
Sea of Flames
Complete Episode 6: "The General from Hell"
Complete Episode 7: "Under the Flag from the Past"
Complete Episode 8: "Annihilate All Stray Tanks"
Complete Episode 9: "Operation: White Wall"
When They Cry
Complete Episode 10: "Conquer the Northern Area"
The Last Samurai
Complete Episode 11: "Infiltrate the Nagoya Tower"
Complete Episode 12: "What the Sword is for"
You get Radio Head whether you win or lose "What the Sword is for". The next scenario will be based on Episode 12's results. The next 2 achievements relate to the Miou endings.
If you lose, you will be on the path to..
A Wish Fulfilled Complete Episode 13: "Miou Liberation Front"
If you win, you'll be set for..
The General Complete Episode 13: "Charge! Human Tanks"
Complete Episode 9: "Kurara Iikura Strikes Back"
Complete Episode 10: "The Meow-Meow Naval Battle"
Ties of Compassion
Complete Episode 12: "The End of the Decisive Battle in Shinjuku"
The next 2 achievements relate to the Kurara endings.
The True Enemy Complete Episode 13: "The Daihon'ei Rebel Unit"
True Enemy requires you to lose Episode 07 (Shadow from the Past).
A Regal Reception Complete Episode 13: "The Will to Fight"
Regal Reception can requires you to lose 2 battles (Episode 07 needs to be one of them). As Equitas Invictus mentioned, this can be combined with..
The End of the War As We Know It Finish War of the Human Tanks
You'll get this during the first time you complete the game.
War of the Human Tanks For Those Who Saw It All
This achievement requires you to see all endings. These 4 endings are all tied to the Episode 13 achievements.
(New Game only) Achievements - 2
These achievements are supposed to be obtained on a fresh game (NOT New Game+).
The only truly problematic achievement here is Nice Kitty. I strongly suggest rushing through your first playthrough (disregard heavy farming) in order to beat the game once and unlock the BONUS maps. One of the bonus maps will allow you to farm the crates necessary to gear up against Mr. Cat (at 300-400k per win).
The following achievements CANNOT be obtained in Free Battle.
Sherlock Win the Battle for Yumishirogahara Before 5 Minutes Elapse (New Game only)
In order to get this achievement, you need a Shock Tank equipped with a Daisy Bomb. Place the Shock Tank on the top-left cell (X10 Y12) and when it gets a turn, move it NW diagonally (X09 Y11) then detonate the Daisy Bomb.
Not the Brightest Pea in the Pod Win the Battle for Matsumoto Railway Without Using Battery Tanks (New Game Only)
Once again you can use a Daisy Bomb for this achievement. The simplest way is to just detonate the bomb on as large of a portion that you can get to and then pick the rest off with Assault Tanks. You can actually take the entire train out if you detonate on the middle of the train (although it's a hassle to pull off).
** For the Nice Kitty achievement, see the Detour Achievements section.
Detour Achievements - 4
A Tankless Job
Defeat the... Tank?
Defeat the Tank-Model Tank
The 2 achievements above are rewarded for taking the first detour on Episode 10.
You will get A Tankless Job if you are following the Kurara path or Think Tank if you are following the Miou Path.
Nice Kitty Defeat Mr. Cat (New Game Only)
No More Mr. Nice Cat Defeat Mr. Cat
Mr. Cat's scenario is in the second detour at Episode 11.
In order to beat this on New Game (not NG+), you will have to invest around 4.1 million crates.
1m to develop Curry (200k to develop and assemble Cola to enable development of Curry)
300k to develop Radiotoxic Bomb (minor amount of crates to develop and assemble Daisy Bomb)
2m to assemble 2 Curry for your 2 Gonta (or the shock tank before it)
600k to assemble 2 Radiotoxic Bomb for your 2 Gonta
You will need to have 2 5-speed shock tanks equipped with Curry and a Radiotoxic Bomb each. Once ready, set up your shock tanks according to the screenshots below.
You need to take advantage of mid-battle saves (top right 'pause' button) in order to kill all Anti-tank Cats in 2 turns. Make sure to save before executing the turn.
Battle Achievements (Part 1) - 14
This segment of achievements cover everything related to battle (assembly, kills, etc).
A-Team Win a Battle Without Losing a Single Unit
Self-explanatory. You get this naturally when playing by the book or farming wipeouts.
Fireworks Kill Five Enemy Tanks in a Single Attack
Easy achievement. This becomes easier to achieve further into the story due to higher tier tanks' AoE (Area of Effect) capabilities. You can also get this quite early on by using the Daisy Bomb (see Sherlock achievement).
Destroy 25 Enemy Units Without Seeing Them First
Collect 1.000.000 Crates from Battles
Assemble 100 Tanks
Achieve a Massive Victory
Win 25 Massive Victories
Fight 50 Battles
Destroy 500 Enemy Tanks
Achieve Ten Speed Bonuses
Achieve Three Wipeouts
All of these achievements are gained over time.
Crates - the amount you can farm gets much larger as you get further along the story.
Massive Victories - earned for having a large advantage over your enemy (number-wise)
Wipeouts - earned for completely destroying the other team (farmable; see All for One for easiest method)
Speed Bonuses - earned for winning fast (see Sherlock for easiest and earliest method)
Purple Heart Ensure a Safe Return for at Least 12 Wounded Units
A unit is considered wounded if one of its cells is damaged. Just keep winning while keeping multi-cell tanks alive after they have been hit in order to add to this achievement.
All for One
Kill All Enemies by Using the Same Unit
This achievement is easy to get in Yumishirogahara by using any highly modded aoe unit (Cat/Heshiko/etc).
One for All
Kill at Least One Enemy Tank Using Each of Your Tanks in a Battle
You can combine this with Superior Intel.
Originally posted by Asdfplaya:
All for One, One for All and Superior Intel can all be done simultaniously by only using heshiko in the first battle
Battle Achievements (Part 2) - 5
Lord of Flies Successfully Intercept 10 Attacks
The best map to get this achievement is 'Carpet'. Keep in mind that Interceptors only prevent Barrage attacks. (thanks everyone for clearing this up)
Big Bang Achieve a Wipeout Using Only Shock Tank Attacks
There are several ways to do this. One of them is by playing the bomb map with 2 5-speed shock tanks (one of them equipped with a Daisy Bomb). The idea is to use mid-battle saves to make sure you get the most 'bang for your bomb'. Use 1 shock tank to detonate the bomb on the closest enemies. Use the other shock tank to force a Hachi to detonate near its teammates.
This is an easy achievement to get if you use +Target Area and +Shooting Range on Heshiko (or any op module really). Just shoot at the general location of the commander in Yumishirogahara (the easiest free battle map) and you'll get the achievement.
Scout's Honor Kill Five Enemy Units with a Scout Tank in a Single Battle
I recommend doing this achievement with Koharu due to her superior stats.
Sword of the Samurai Win a Battle Using Only Melee Attacks
Another easy achievement. Just equip +Target Area modules on Sekigahara and lay waste to Yumishirogahara.
Research Achievements - 9
These achievements simply require crate farming to obtain.
** It's impossible to develop Koharu or finish the Assault research line before fighting Mr. Cat on new game (not new game+) since you need Sekigahara to get them. **
Easy Crate Farming:
These 2 maps are unlocked on NG+
Free Battle Map - Colosseum #26 - Killing off your commander nets you 300k each loss.
Originally posted by Asdfplaya:
level 26 300k even if you lose and you even have the bonus level if you start a new game after finishing the game(100%/all 4 endings)
Free Battle Map - Carpet #25 - Killing off your commander nets you 200k each loss.
Originally posted by h4:
use carpet (#25) imho. place heshiko in front of the enemy melee so she dies quickly. or if you have a high speed unit, use it to execute heshiko and end the battle faster. minimum 200k for doing nothing.
To farm crates for 'New Game only', you'll want to finish the game once first to unlock the Bomb map. See Big Bang achievement for YdenMkII's video on farming this map.
Girl Scout Complete Scout Research Line
Supreme Commander Complete Command Research Line
Shock And Awe Complete Shock Research Line
Steady Does It Complete Barrage Research Line
Killjoy Complete Interceptor Research Line
Cookie Cutter Complete Assault Research Line
Masamune Develop the Infinite-Range Battery
Koharu Develop the Smart Radar
A Slight Advantage Develop 30 Modules
Free Battle Achievements - 4
This next set of achievements are gained from beating certain Free Battle Maps.
The Cat Came Back Defeat a Horde of Cats
This is a harder version of the detour scenario with Mr. Cat. You will be rewarded with 'Cat Ears' upon winning the battle (it allows your unit to mimic the Cat's parameters).
The best advice I have heard so far (and that I personally tried as well), is to try 3 Gontas with the Radiotoxic Bomb+Curry and have a back-up line of Line-mons/cats/etc.
I detonated the leftmost Gonta to wipe out the immedate threats and then moved my 2 remaining shock tanks 1-2 cells forward (remember to save in case you miss or get killed randomly). Once the cats have finished hitting air, I proceed to detonate the last 2 Gonta to cut down the enemy's numbers further.
With all your Gontas gone, you just need to pick off the remaining cats using your back line. Having Tank GPS (+3 sight) x2 on your Commander helps a ton.
See screenshots below for a few examples on what I just mentioned.
Pesticide Clear Fruit Bat Bonus Maps
The 2 Fruit Bat bonus maps are 'Fruitbat Outbreak' and 'Fruitbat Invaders'.
The first map requires you to kill all enemy commanders using only 1 commander. I suggest doing Kurara's route combined with Satou's lessons (see Episode Achievements) because it unlocks an upgraded Heshiko later into the story.
If you also managed to complete The Cat Came Back, you can equip Cat Ears to make your Heshiko even more powerful and therefore make the first map easier. Just use a +sight module and play safe while going through the left side and killing everything you see. Never rush in too deep and make full use of your sight to pick off enemies that can't reach you.
As far as the second map goes, 'Fruitbat Invaders' just throws a bunch of Gontas at you that can catch you off-guard if you proceed without caution. It's not too hard but you have to take into account that there are a massive number of them. Just make sure to deploy all your units and go with Line-mons/cats because you'll need fast-moving units to counter Gonta Invaders.
Meat Grinder Overcome Megumi's Counterattack
One of the Colosseum maps will be described as Megumi's counterattack. Beat it and you'll get the achievement. Watch out for cats!
Optional: Wiping out one side of the map of a Gonta will make this battle go quicker but it's not really necessary to win. Just stick to using Cats gained from the detour scenario and Line-mons.