If one of you has some good tips/hints, just post em, i will add them to this post.
I. General Tips/Hints
*Essences: In order to gather the Essences which are used to cast Magic you need to face an field which contains the Element you want.
grass, plants, moss ---> Green Essence
stone, dry mud, streets ---> Yellow Essence
Water, wet mud, Water barrels ---> Blue Essence
Fire, lamps ---> Red Essence
Stand next to the field of the specific Essence you want to gather and use "Action" -> "Focus" and let your character face towards the field. A small animation will be played and the colour of the animation will show you what kind of Essence the character gained and the displayed numbers shows you what amount the character gained.
The amount you gain is based on your character class and level. Magic-Users will gain more Essence as Melee Characters.
*Pay close attention to the levels of your characters, try to level them all at the same speed. Later in the game there are some "duell-battles" in which only one character is fighting, and you don't want that character to have a low level.
*Revisit all areas after each chapter. Trust me it will help you a lot!
*Stock up on Essence-Items. These Items are very helpfull to charge up your Essence-Score. They can give you more Essence than Focus can do.
*You can get Gold and XP from "random" Battles. These "random" Battles are bound on specific Areas. Just walk over the Areas and wait for a battle to trigger. Depending on the Area and Chapter you are currently in, you will face different sets of enemies. Use these Battles to gather gold and XP. "Random" Battles don't give your characters Bonus-XP at the end of the fight.
*Play slow! There is no need to run through the Map (exept for one which has a Time-limit). Take advantage of the AI. Melee Units will always charge at the closest character within their move-radius. After that they will aim at the character with the lowest defence.
*If you can't attack an enemy after moving, than use "Focus" to gather Essence. Every amount of Essence will help you (but only if the character can use this type of Essence).
*Use the action "Focus" to chance the direction of your character. That way you can be sure that your enemy won't hit you from the back. This is a good way to prevent the enemy from dealing additional Damage.
*Try to get enough +move items that all of your character have at least a Movement of 5+. This will greatly help you in a lot of battles, because you can get your weaker Magic-Users out of the enemies reach before they have a chance to kill them. And if your Movemnt is high enough, you can even walk behind your enemy and hit him for addtitional Damage.
*Take your time and look over your enemies. If they have Essence-Scores then there is a very high chance that they are Magic-Users. These are your prime-target, because they can hurt you a lot with their AoE spells.
*Each action (exept moving and Focus) gives your character XP. Beware! If your enemies level is too low you will still get 0 XP for attacking him.
This piece of information can be used to "grind" some XP. Get a Character with high Defence (Mo for example) to tank the last enemy and just spam support-spells or actions which don't hurt the enemy. That way you can get a nice amount of XP before ending the map.
*The Bonus-XP your whole team gets at the end of a Map can only give you one(!!!) level-up. If your character has 90XP and you get 100 Bonus-XP than the 90XP "left" after the level-up will simply vanish. Try to level-up your character during the map so that their XP-Gauge is near empty, that way you won't waste the Bonus-XP.
*Your own AoE spells are a nice way to grind XP for your Magic-Users. Taunt a group of enemies with a character who got a good amount of defence by running into their move-radius. After they are focused on him, get your Magic-User into range and use your AoE spells. Easy XP to level up your magic users without getting hurt.
..... more to come .....