Deus Ex Generalities
Some general hints for N3 players!
(1) The maximum level of a character is nine. More attacks are unlocked at higher levels, and more potent weapons (if acquired) may be equipped.
(2) Replaying a mission will slowly increase the potency of items (extrapolation from game manual).
(3) Items however, are partly randomized in chests and always randomized from dead enemies.
(4) Save slots track campaign progress and character development. Reserve one slot for each character!
(5) When you acquire a weapon or item, don't forget to equip it (Status Menu). Equipped items are organized by power level (Clover 2 will precede Life Globe 1 for example).
(6) Blocking is universal (and non-chipping). Block often against bosses or don't expect to survive.
(7) Orb Spark (blue) is very rare. If you have to forego an Orb Attack (red) to get more blue orbs or just to save up the Orb Spark for a boss or big conglomeration of enemies, do so.
(8) Troops are expendable. Use them or lose them.
(9) Allied officers are invulnerable. Use them to lure bosses while you attack --> from the back.
(10) Inphyy's final stage is impossible without some serious devotion. First, she needs her level 9 attack move. She also needs to achieve several S ranks across her stages -- this is because there's an item that lets Inphyy do red meter draining moves without draining the red meter. You will need that to defeat the ultimate enemy!

Aspharr
You must finish Fort Wyandeek with Inphyy.

VigkVagk
Finish the game with all the other characters.

Tutorial Weapon
When you play the tutorial stage make sure you check every treasure chest for a Prominence weapon. You need to increase Inphyy's level to equip it, but this is the only way to unlock this sword before committing to Inphyy's campaign.

General Hints
A character can reach the maximum level of 9. More attacks are unlocked at higher levels, and more powerful weapons may be equipped.

Replaying a mission will slowly increase the power of items (extrapolation from game manual).

Items are partly randomized in chests and always randomized from dead enemies.

Save slots track campaign progress and character development. So reserve one slot for each character!

When you get a weapon or item, don't forget to equip it (Status Menu). Equipped items are organized by power level.

Blocking is universal (and non-chipping). Block often against bosses or don't expect to survive.

Orb Spark (blue) is really rare. If you have to forego an Orb Attack (red) to get more blue orbs or just to save up the Orb Spark for a boss or big conglomeration of enemies, do so.

Troops are expendable. So use them or lose them.

Allied officers are invulnerable. Use them to lure bosses while you attack from the back.

Inphyy's final stage is impossible without some serious devotion. First, she needs her level 9 attack move. She also needs to achieve several S ranks across her stages -- this is because there's an item that lets Inphyy do red meter draining moves without draining the red meter. You will need that to defeat the ultimate enemy!

Curse Yourself Trick
Getting higher combos will unlock more powerful weapons. You are able to unlock the aegis charm 4 which raises your defense up by 80%.

The trick is to use those cursed items to weaken your character so you dont kill everyone in one hit. Each character has a level where you can rack up a huge combos. I got those items for Imphyy when I first reached a 9800 combo!

Extra Inphyy Mission
Finish the game with all main characters. With the saved progress, load-up Inphyyy as a selected character and she will have an extra mission to play.

King of Nights
Beating the final boss of N3 is much easier by doing the following steps:
1. Increase Inphyy's level to 9 for her final attack.
2. Get the accessory "Deadly Armband" as a randomly dropped item from various Army of the Night enemies.
3. A strong weapon. The Klausorus is an award for S rank in Inphyy's Eauvarria Mountain Pursuit.
4. Do Inphyy's final attack move (GREEN, GREEN, YELLOW) on the boss when it is distracted and dash to evade all retaliatory attacks.
5. As a safety net, consider equipping the accessory "Demon Gloves" if necessary. Good Luck!