Successfully complete the game on the normal difficulty setting to unlock the hard difficulty setting.
Successfully complete the game on the hard difficulty setting to unlock the super difficulty setting.
Successfully complete the game on the normal difficulty setting to unlock Arcia.
Defeat the stage 9 Boss to get the Map Selector. This allows you replay any previously completed stage.
Defeat the stage 10 Boss to unlock the Change Appearance option. This allows you to change how the enemies appear on any previously completed stage.
Successfully complete the game on any difficulty setting to unlock the "Extra Menus", "Liv Special PV", "Total Results", "English Language Cinematics" (in the Japanese version) or "Japanese Language Cinematics (in the North American version), and "Language" options.
Pause the game before the last part of your health disappears. Use a healing item, and you will still have that life.
Find a location where enemies spawn in groups of two or three. Put a Legion on active attack mode and let them kill those same enemies for hours. This works if your Legion is strong enough, but check up every ten to fifteen minutes to make sure your health is still the same. If it has changed, check more frequently to make sure you do not die. Also, let your Legions take the kills and do most of your dirty work. You will get double experience. Also, press Force Attack if you are in a tight spot. Additionally, for more challenging play, but better experience, when a generator keeps making monsters reappear, just stay there and kill those monsters over and over again, but don't attack the generator.
To get the multiplier, get the target result. You can view it by using Select. Try the achieve the maximum time. For health and soul, after defeating the Boss, quickly press Start and use health and soul item to get full. If you get the all targets closely, you will get something like 3x for the experience multiplier. Note: You can pass the target for special monster, health and soul, but you cannot pass or get less than the level time and Boss time.
Make sure to level up one organic-attack Legion and one inorganic-attack Legion (for example, Guilt and Flawed) until stage 9. After that, you can go back and level all of your Legions equally. Also, Blasphemey and Hatred Legions are by far the hardest Legions to level up. Take out one of your more powerful Legions along if you are using either one of them.
When using the Guilt Legion, treat them as your troops and yourself as a general. Command them into attacking targets who pose the largest threat to you by locking on and using Force Attack. If you are in need of protection from an onslaught, unsummonm then resummon the Legion after putting it into passive mode. Then, when enemies close in, press Force Attack and let your minions do the dirty work.
The Hatred Legion is useful when you need some serious back-breaking power. It is best to rely on these Hulk-like legionnaires if the enemy's number is great and you are in need of a little break. They are best left in active mode. However, if you fiddle around with passive mode and target elimination, you can become a ferocious force with this legion.
This is the crossbow Legion best saved for large numbers of metallic enemies. Sniping is a great option, but consumes Soul Power. When the metallic enemies draw within ten feet of your legion, tap Force Attack repeatedly to "group snipe" them. Keep in mind that this is a great Legion for large numbers, but for other metallic enemies that are powerful as the Hatred legion, (for example, the armor suits on levels 10 and 11), consider using the Flawed Legion.
This is the "human shield" Legion. They are best used to create a temporary safe haven. Basically, summon them and keep them in passive mode so that they do not move, but protect. Then, trek out slightly and face your foe. If you find your enemy's numbers are too great, simply fall back to your safe haven and battle them from behind your shields. You may notice that the Arrogance Legion does not exactly pack a whole lot of power in their attack. However, if you wait until they have just a little bit of health remaining, press Force Attack and watch them put the hurt on. Then unsummon them and fight ferociously until you have restored your soul power.
These are the little midgets with razor fingers. Once you lock-on to a hard to-defeat metal enemy and press Force Attack, they will surprise with how they burrow into your opponents and take their health down a by a considerable amount. They are by far the worst fighters when left in active mode, which is why they are not recommended for large group fights unless you are in a situation where your attacks are almost worthless. Note: The Flawed Legion's extra abilities and the group's unsummoned special attack are by far the most useful of any legion.
Their little floating bombs also turn into convenient little land mines. This legion is best used against Denu, or the metallic and shiny opponents that are impervious to your attacks.
This is by far the game's best Legion, yet the most underdeveloped. For example, it teleports to your opponent's blind spot and basically mutilates it. When you use its unsummoned special attack, you can move through a plane of slower time. There is only one legionnaire in this crest. Also, you cannot rely on this Legion to protect. It has a reaction time, and when it attacks it leaves you very vulnerable to your foes.
If you want a longer combo try jumping into the air once. When coming down, you will hit your enemy once and when you hit the ground you will start your regular combo. It is still slightly longer.
You will eventually encounter gates with huge metal boxes behind them. Notice that you can lock on to these gates and even attack them, but it does not really do anything. That is because you need to use a Legion's attack to open it. To see which Legion you should use, check the little circle in the gate, and make sure it matches your Legion's symbol.
Find a safe location where the lasers shot by his minons will not hit you. Then, stand there and time the lasers with your Legions and your own attacks so that no health is lost.
In the cave, have no Legions active so that you can run around. Run up to the Boss and attack its right leg repeatedly. It does not matter if it is the right or left leg, but must be a front leg. After its leg falls to the ground, quickly summon a Legion (preferably Guilt) and press Force Attack (default Triangle). Attack it for one volley, then press Force Attack again and begin to get away from the Boss. Unsummon your Legion, and look at the Boss while in one of the two small clearings. While facing the Boss, hold R1 and as soon as its first laser is about to hit you, press X and movement Analog-stick Right. While still holding R1, repeat that maneuver once again. Then, repeat by attacking the leg and so on. Note: If the Boss falls from its perch, quickly get near its head and attack the now visible silver orb along by using Triangle with your Legions to assault it.
Jump and attack so that you can do a spin slash at its head. That will immobilize it. Keep doing this.