@Crystalgate: That's what I was aiming for. It has less options than Legionwood 1, but each of the options is more structured and actually somewhat viable. (you'd be able to have a Warrior/Cleric for example, using equipment and stat boosting to cover the lower Intellect attribute).
Yes, I agree with you that Warrior/Berserker and Magus/Cleric are the most obvious initial brute force classes, but they are by no means the only way to proceed. In fact, if you used only these classes, you would find yourself at a disadvantage, as you wouldn't be able to do things like debuff enemies, inflict status ailments, steal items, or inflict specialised damage to specific monster types.
I would say that Conjurer, Alchemist and Ranger are more "tactical" classes and less essential than the others. But I've made sure that the options granted by having a Rogue combination are very appealing (better equipment via stealing, more Runecrafts via stealing, ability to debuff and inflict statuses etc) and Gunner is also a very appealing class to play (favouring critical hits and evasion while still being able to hold its own, attack wise, compared to a Warrior).
As for the classes being properly balanced, that's something I hope to test via having people play the game. Obviously, the way I play does not account for all possibilities. I've tried to balance them out in theory, but the actual nuances of each class will become apparent as people play. I'd consider it roughly like Final Fantasy V in that certain classes are slighly better or worse than others.

In general: The first goal is to be able to two shot enemies. In some circumstances, you may be able to one shot them, but usually, you can't unless you're over-leveled. So, aim for two shotting them instead. Further, it's better to remove 60% of an enemy's lifebar and survive two attacks than to remove 90% of it's life, but only survive one attack. In both cases, you will need two attacks to kill it, but in the former scenario, you will survive longer. So, once you have enough attack to two shot enemies, it's better to increase your defenses than to further increase offense. Finally, it helps if you're faster than the enemy.

With a strong build, you're more or less safe against getting a game over from random encounters, but you can still have characters KO'ed. Spells are nasty if you aren't a Magus or Cleric and there are other unfortunate circumstances that allows enemies to KO even well-prepared characters.

Warrior: The Warrior has great defenses, good skills, but suffers a bit both in terms of attack and agility.

At the beginning, the only real way the Warrior has to increase agility is to equip a spear, so do that. This will bring attack down further since spear weapons are weaker than sword weapons, but you can take care of that problem by equipping two Offense Rings. The Warrior has high hitpoints and defense and doesn't need any defensive accessories. Further, it's Double Strike skill is cheap enough to be spammed, so use it instead of attacking if attacking isn't strong enough.

This gives you a character who's very fast, can two shot randoms and is very durable.

Once you get the Swift Shoes, you can give the Warrior a sword instead of spear and switch one Offense Ring for the Swift Shoes instead. Also, you may at some point steal an axe that's really powerful. If you do so, combine the axe with the Swift Shoes.

The First Aid skill is also great for healing early on. It has a set power though, so the healing will become less and less impressive as the game goes on. However, if you don't have a Cleric, First Aid is the cheapest after battle healing there is. Finally, use first aid if someone suffers from defense down, getting attacked with a defense down debuff will usually result in a KO.

Sharpen is useless against randoms and only useful against bosses if you're confident that the Warrior will be able to keep attacking. Counter Attack sounds like it would be great if you combine it with increasing the Warrior's agro, but counter attacking seems to crash the game whenever it kills something. Save first if you want to try it out.

The Warrior is flexible as is and currently doesn't need any sub class.

Rogue: The Rogue has a very high attack, it will two shot most randoms without aid of Offense Rings. If you give it a sub class, you want to give it two Shield Earrings. Without a sub class, it only needs one and you can use the other accessory slot for whatever. The Rogue is also fast and should go before enemies without further aid.

Against randoms, the Rogue's most common role is to attack and steal. For safety reasons, you may want to kill one enemy before you start stealing. However, the Rogue is very fast, it will probably be one of the first two characters to act, so it's first turn may already be used up once you kill an enemy. It's a risk vs reward decision whether you use it's first turn to steal or to attack. As a rule though, if you start running low on Angel's Tears, it's time for less stealing and more killing.

Don't bother with status effects on randoms.

Steal from bosses until you cleaned them out, a lot of them have multiple great items. Status effects can also be useful as long as the boss is vulnerable against it. You can try speed up, but remember that you use up a turn to cast it in order to gain turns. For it to really pay of, you need to stack two of them and then recast it as soon as it's about to wear of. If you don't feel like counting your turns, don't bother.

Gunner: The Gunner has some great skills, but it's attack is to low to two shoot randoms, even with two Offense Rings. You can try giving another character extra high offense so it and the Gunner can together two shot randoms, but that strategy is unreliable for various reasons. Ideally you want any combinations of two characters to be able to kill one enemy with one action each.

My solution is to make a Rogue/Gunner instead of a pure Gunner. Rogues have high attack, but almost all of it comes from equipment and the sub class penalty is based on the base value, so the Rogue takes almost no attack hit at all from getting a sub class. A sub classed Rogue has durability issues though, but two Shield Earrings more or less fixes that problem. Finally, having two characters who can steal is convenient for random encounters.

The Gunner should use Study Enemies on each enemy type once. I've experienced a bug that causes the scan to fail when it shouldn't, but try scanning until/unless you consistently fail. Critical Shot and Debilitating Shot is not worth it against randoms.

Bullet Time an expensive, but useful skill, as long as at least three enemies are left. It has accuracy issues and one enemy may very well be deal already when the Gunner's turn comes up though.

Silver Bullet's use is obvious.

Against bosses, the Gunner should first fire Debilitating Shots until it hits twice. This will greatly slow the boss down. Occasionally use a new Debilitating Shot to reset the duration. Next you may want to fire Critical Shot's to bring it's defense down as well. This will make the boss take slightly higher damage (defense down has a much lower impact on enemies than on characters) from physical attacks which isn't that great, but it will add up over multiple attacks.

Magus: The Magus is frail against physical attacks, but can easily two-shot randoms even without augmenting it's intellect with accessories, so two defensive accessories are recommended. The Magus is however almost immune against magic, so Shoulder Pads is better for it than Shield Earrings.

It's also easy to figure out what skill to use, just use whatever the enemy is weakest against. Human enemies however don't tend to have weaknesses, so the Magus is not very good against them.

Cleric: Don't use a pure Cleric, you lose way to much damage output that way. Use a Magus/Cleric or a Cleric/Magus instead. You can make an exception if all enemies in an area are weak against Crumble though. Either way, the Cleric want the same accessories as the Magus.

The Cleric heals and has some buffs that aren't very useful. Healing Light is however the only practically limitless source of full healing once First Aid starts to fall behind. It also saves money over throwing salves, but eventually (next update probably) the cost of salves becomes obsolete.

Generally, you want to use the offensive skills of the Magus unless you want to heal. That's all there is to this class right now.

This is a great guide, Crystalgate! I'll make a separate page for it so that more people see it. The CTB change on skills is out in the next beta, by the way, so players will have no choice but to not use the bug. The only ability that will work in this way is Debilitating Shot, which will work like Delay Attack in FFX.

EDIT: I should point out that it actually has been fixed in the latest available download, so to those reading, do NOT open the game in the editor and delete the ctb change commands -- they're on the correct Techs now.

Also, I hope that the next beta, with its introduction of two new classes, will stir things up a bit. I've also implemented more Techs that directly control Evasion, Hit Rate and Threat, which should add some tactical options to battles. The Ranger is a class that (sort of) combines elements of a Rogue and a Gunner, while the Barbarian is a more offensive version of the Warrior. I'm also going to be making Clerics more versatile.

Ah yes, I see what you mean. I've re-uploaded, changing the CTB costs to negative costs (ie. 30% to -30%) now. I assumed the CTB change command was supposed to be used in moves like FFX's Delay Attack, and I didn't know the effect was still happening even if the move misses. I'll have to look into that.

I might add a speed penalty to Debilitating Shot, so that the gunner loses a turn for using it (to prevent it being spammed), and I'll see if there's a script to make the Agility debuff not stack (I didn't realise VX Ace stacked the debuffs each time one was made -- I assumed the new one would just cancel the old one out). Likewise, I'll ask the creator of the CTB script if there's a way to prevent the effect happening more than once per turn or if the attack misses (the ideal way I'd like to have it so that using it more than once in succession has no further effects).

"CTB cost decides how long it takes for the user to act again after taking their action. 100% is the default. Anything higher means the skill is slower, anything lower means the skill is faster."

Now I get it. That solves a lot of problems. I thought it worked like CTB Change, with negative values making the user have to wait longer for their next turn. I was trying to figure out why putting negative values just made them normal speed. Expect it to be sorted out in the next release.

CTB change is working how I want it to, though: the Techs that delay the target's turn are set to negative values already.

That's a good point. In future revisions, I'll add some more chests with healing items there, but otherwise I wanted that part of the game to catch you off guard.

That's the kind of situation I was aiming for. It's basically a test of how well you can adapt to a dangerous situation when caught off guard. There will be other such situations in the game - essentially every time you enter a Gate, at the end of each Chapter.