Decent game, maybe below decent.
It isn't a bad game, but neither is it a good game.
Lets open up with graphics: they were boring. I don't mean that your art sucks, I'm just saying that they were boring. Everything was just reused again, just re-skinned. At first, it was very nice and fres, but about halfway through the game, they become tedious and boring.
Not only are your graphics boring, so is the gameplay. The gameplay is repetitive beyond relief. Like, the graphics, they are nice at first, but you start to dislike it. The enemies and their attacks were the same, even with the kings/bosses. They. Were. All. The. Same. The only difference was that they were a different skin. The difficulty of this is very very easy. The first thing you get when you play the game, heal. You can spam too, sadly. So when you are fighting and are dying, just run away and heal. It was not considered very hard, even on Insane mode. Just keep adding into the charge attack and heal, with some teleport.
Let's talk skills. Most of the attacks were utterly useless. I found that the charge attack, the first one you get, was the most effective, when leveled enough. You would go far distances and hit a lot, whilst knocking the enemies back. The other attack skills besides teleport were useless and weren't needed. Also, with the charge skill, I am able to go about a screen and a half without hitting an enemy, but sometimes, an enemy could be about a screen away, I rush him, but I wouldn't be able to hit him. Why? Let's go to the "magic". You have the basic fireball. Why doesn't it go straight? The only usefulness it has was the jump+down+fireball, to hit mobs. The fireball should have gone straight, because the comet skill was the same thing. The saw blade thing wasn't very useful. It wasn't very strong, either. The two skills after fireball took too long to charge, without doing that much damage. Let's look at the last branch. The healing skill was the only thing I got from it. I "maxed" it out. Notice the quotations. I leveled enough so it would only heal 20% HP. The more I leveled it, the more the recharge would take, without getting more heal. Srsly. Wth. The skills are too few, especially when they aren't very useful.
The controls. You have basic controls, they are fine, though, when holding down attack and your turn, I would stop attacking. It get's annoying. Also, usually a spell would be fully charged, and I would just stand there and press the button and wait a few seconds for the skill to activate. If that was due to it not being done, make it flash or something, to notify it is done. The attacks were boring. When I mean attacks, I mean attack. You only have one basic attack, no chain attacks (without using skill ones), nor do you have different sprites. Also, when you are jumping, no sprite difference? I don't know about you, but that bothered me.
And let's get to the store. The store. Why don't you allow the player to buy weapons with in game currency instead of real life currency? And besides, those weapons would have broken the game. They are unfair. Anyways, if you wanted to get paid, you would have made something like an EXPANSION PACK. Something actually worth money. The system you have now is flawed. It makes the game easy, possibly driving the player away.
The sound. The sound was very very repetitive, so repetitive. You used the same track throughout the whole game. And that track was a loop of some very repetitive sounds.
Let's recap. The graphics are boring and repetative, only using reskins. The gameplay is repetitive aswell. The skills weren't special and were mostly useless. The store system was flawed, as you would be paying to make the game extremely easy. The weapons you DO find however, do the job quite easily, so buying weapons is pointless. The sound was repetitive and annoying, with no variety.
Everything in this game was repetitive, in every way possible. It just isn't fun. I still don't see why anyone would pay for a FLASH game, let alone a not very good one.
I give you a 6/10
Not very good, not very bad. To improve, just add some variety.