Yes, all these are great suggestions (I've played and beaten this game 23 times) but here is one more. If you have a spear make as many of your guys as possible lancers. This is because they can jump and co a super amount of damage and no one can hit them or stop them. Here is a cheat I found last year. You probably have enough JP to get "level jump one." So press "o" but when it says "are you sure" hold down x and square and press down then up (while still holding x and square). you should be on an ability you cant afford and your finger (pointer) should be on "yes". Buy it and one of 3 things could happen. Your JP points could be 9999 and you can buy all abilities of your lancer or It could show 0000 Jp so exit lancer and job chart, go back in and you should have 9999 or 0000 which either one you can get all the abilities or the last thing it could just not work. If it does not try again if it still does not work right a reply and I help you more. PS this works on all jobs as log as there is enough abilities to scroll up or down. Example you can use it on Lancer, wizard priest etc but not on monk, knight etc.