FINAL FANTASY XIII
35 Achievements
1,000
60-80h
Limit Breaker
Dealt 100,000+ damage with a single attack.
30
2.28%
How to unlock the Limit Breaker achievement in FINAL FANTASY XIII - Definitive Guide
On chapter 11, go to the 2nd floor and start mission 22. It's against Ambling Bellows. (Make sure you get a 'Preemptive Strike')
Set Vanille as the party leader, you will stagger the enemy very quickly.
Once staggered call out Vanille's Summon 'Hecatoncheir'. Hit Ambling Bellows a few times by pressing 'A', then press Y to use the finishing move 'Gaian Salvo'.
This finishing move is level 3 if you use it quick enough. This got me 177,000 damage and unlocked the achievement once i'd won the fight. Good luck :)
Use a Deceptisol before the battle to get insta stagger
Paradigms- Guerilla (SAB, RAV, SYN)
Relentless Assault (COM, RAV, RAV)
Perpetual Magic (RAV, MED, MED)
I had Fang's Commando role completely maxed out when doing this (post-Chapter 13). In the Archylte Steppe, find an Adamanchelid (one of the large gray monsters whose legs you DON'T have the option of attacking). Auto-Debuff with Fang while Hope casts Haste.
When everyone has haste, switch to Relentless Assault. After filling the chain gauge about half way, call out Fang's Eidolon, Bahamut, while staying in relentless assault. Press the X button when the Gestalt meter is full and then press A for the remainder of the battle. Bahamut's final attack did 411k+ damage for me, killing the enemy and popping the achievement.
If you are underdeveloped and in danger, switch to Perpetual Magic to heal while still building the chain gauge.
Finally, mission 42 - Antihero worked for me. I killed all the small borgbears and staggered Borgbear Hero to 999.9% with Tri-disaster paradigm (without any ailments on him). Then I switched to Bully and waited for synergist and saboter to cast as many enchantments and ailments as possible without attacking. When stagger time was almost over I launched Lightning's attack... You figure the rest.
There are two ways to break 100,000 damage with a single attack: using Fang's Bahamut Eidolon on a heavily staggered enemy, or through the use of the Genji Glove accessory. If you choose the former, stagger an enemy and attempt to get the stagger bar as close to 999.99% as possible, then summon Bahamut. Fill the Gestalt Bar before changing to Gestalt Mode, then use your Lv. 3 Megaflare. Doing this can easily exceed 300,000 damage. If you choose the latter, simply use powerful skills on staggered enemies - Fang's Highwind is almost guaranteed to break 100,000 damage if used on a staggered foe. Once you deal 100,000+ damage with a single attack and then finish the battle, you'll receive this trophy after the battle is over.
There are two ways this can be done. One is using a Genji glove (obtained from missions 51, 62 and 63) with Fang. Stagger an enemy and drive it's stagger percentage up with two Ravagers. If her strength is high enough and her weapon strong enough, she will easily be able to hit over 100k.
The second way is to use Bahamut, Fang's eidolon. While controling Fang, get an enemies stagger bar up to about halfway, then summon Bahamut. Fight alongside him for as long as possible, so you can get the enemy staggered and raise your Gestalt meter at the same time. Once the enemy is staggered, press to use Megaflare. This should deal over 100,000 damage. If the enemy doesn't die from the attack, just finish the battle as normal and the achievement should unlock at the end.
A popular place to do this is the Archlyte Steppe - Northern Highplain, just before the entrance to Mah'habara. The two enemies fighting there will enable you to get an easy pre-emptive strike. The Behemoth has a stagger of 850% so should be easy to hit over 100k on when staggered.
Well, you can also summon Bahamut and with a full gestal scale and make a mega flame.