You know, I'm usually nice and I try to find the best in each game I play... but I didn't find anything on this one.
First of all, the game isn't any story or anything, you just wander around killing paople because you're bored or something, and even if the reason is on the description, you shuold try to put a text to tell why.
Second of all, the moves: I found simple tiles usually practicable in the game suddenly un practicable, you cannot climb up the stairs and there are random doors on the last level.
Then, even if the idea of collecting crystals for a magic armor is good, it's just too simple because you are done when you are done on level 2 and there are way more you can collect but as it doesn't do anything...
For the attack, defense and lives thing, it's a good idea, but I didn't really see the difference between new armors and more defense.
The monsters stuff is just strange too. I beat all the bosses in 3 attacks, but I just dies fighting a flaming thing... Not fair; and the attacking board under the battle isn't explained, so it's not totally understandable for everybody.
You also have the sound problem. I don't know it there should be a music or anything, but if you can hear the flixel sound test when you turn up the sound, you cannot hear any music or sound. I think you should add a backgrounds music, some walking sound, and, maybe, at least a sound when you attack, if you don't want to put a sound per attack.
Then, last but not least, the end. You made a last boss, really easy by the way, which is the end of it, for no reason: you just kill him and then, you win. If you wanted to show the number of death you made, re-read the script, you made a mistake and it just shows the line, plaus if you restart you restart on level four, with 2 attack, 2 defense and 8 lives, and as you cannot go back, it's just impossible.
If I had a question t ask you about this game it is "Did you even test it?!" You should try the game before posting it, and if you cannot test it on your computer, you should at least remove it when you see the mistakes you made...