Lol out of the game i only used limit breaker about 5-8 times

Yes if u are in a corner and Rosso uses her ultimate combo on u u think ur finished but yet there is a way to escape that, if ur in a corner and shes about to use that combo and she hits u half way through the combo Rosso will take about a 0.8 second break that's where u escape u took a forward jump into the air landing right behind Rosso and simply just shoot Rosso to death or use materia *loves using Thunder* but as always keep Cerberus on and if u were obvioudly had a brain u would of upgraded Cerberus the most (Yea i got the ultimate Speed Cerberus).
If u want the game to be alot more easier the following upgrades that i used will hopfully help u if u use them correctly:
Always equip the Long Barrel and upgrade the barrel a few times not to ultimate though as u get a more powerful version at the last place thing *cant remember what it called ^-^*
Upgrade the new type of gun as soon as you possibly can by at least once
Upgrade Cerberus Relief at least once and equip regulary *cant spell lol*
The types of guns that i upgraded to as follows:
Cerberus = S Cerberus (to the best lvl)
Machine Thing = P Mschine Thing (about mid-level) } only mid level for both of these guns because you will come across more powerful versions at the last place if you find them
Shotgun = S Shotgun (about mid level}
Well you don't have to follow these tips but it certainly got me through the game alot more easier