De Ragan Slayer 100 points: Defeat the Chapter 3 Boss.
Onmagoug Slayer 100 points: Defeat the Chapter 5 Boss.
Adahna Degahna Slayer 100 points: Defeat the Chapter 7 Boss.
De Ragnus Slayer 100 points: Defeat the Chapter 8 Boss.
Magas Maggahna Slayer 100 points: Defeat the Chapter 9 Boss.
Dimmagolus Slayer 100 points: Defeat the Chapter 11 Boss.
Dulk Fakis Slayer 200 points: Defeat the Chapter 12 Boss.
Dulk Fakis 2 Slayer 200 points: Defeat the last Boss.
Extra mode:
Complete Chapter 4 in Story mode to unlock the "Extra Mode" option at the starting menu.
Save when game is frozen:
If your game freezes, do not turn it off. Sign out of your profile. The game will boot you, and will save your progress.
More photon points multi-weapon:
Go to the shop and buy a lot of the same weapon that you use. Then, add them all to your palette. Equip all of them with skills, if desired. This trick does not require multiple skill items. This saves lots of Meseta because you will not need to buy Photon Charges. This trick is also very effective for forces because they will not run out of photons nearly as often.
Show your character face when chatting:
Before you type your text enter @0-9 followed by your text. For example, @1 hello. This will allow your character's face to pop-up on the screen. If you have a keyboard, hold [Shift] to yell your text.