SD GUNDAM BATTLE ALLIANCE

For this achievement to accumulate a 50 hit combo, it can be easily done by the very first Gundam type mobile suit called Phoenix Gundam you unlock after the tutorial, upon beating the first or 2nd mission.

Step-by-Step Procedure: (Assuming you use the default button layout)


1.Turn off both partners and start any mission
2.Play until a group of enemies spawn and make sure they all next to each other
3.Lock on any of them by clicking (or you can change to automatic lock-on in options)
4.Wait until all 3 of your ranged weapons are fully charged
5.Fire Sub1 ()then quickly (Instant 12 hits)
6.Fire Sub2 ()then quickly (Instant 10 hits)
7.Fire Main () 8 times then quickly (2 hits per shot, 16 hits in total)
You should have 50+ hits by now if above shots hit multiple enemies during the process, all above shots land a 48 hits combo to a single enemy assuming that enemy has ton of HP. But if not,
8.Fire all remaining Sub1 (mashing ) (Instant 12 hits for each)
Hopefully by now you have 50+ hits already, unlocking the achievement.

This may take a few tries, I found a good mission for it is 4C Break, immediately from the starting point 3 enemies will spawn, try the above method on them, rinse and repeat until it unlocks.

For all those with the preorder at the time of writing this, once you have the pilot skill “counter meister” use that with the Command Gundam and find a group of 3 or 4 enemies and attack using your main gun and your 1st secondary

I ended up getting this without trying for it.

During the final True Mission of Directory 3, which doesn't unlock until AFTER you've cleared most of Directory 4, you'll be up against a fast-moving Mobile Armor with a lot of small units supporting it. Using the RX-79[G] Gundam, and the pilot skill for larger explosion radius, I fired the missile launcher which targeted a large group of the smaller units, with each one counting as a hit and it quickly hit the 50-hit combo required.

You could also just equip a part that boosts the machine gun to have more than 50 rounds in the magazine, then go up against a big, slow target and empty the entire magazine into it.