Dream interpretation is much like Tarot Card reading; it's all about the readers interpretation. I've never liked the concept of "dream dictionaries". After all who's to say Plane's mean the same thing to a guy from Brighton than some lass from Uganda. So here I go with the whole interpretation thing.

Quote Originally Posted by SummonerCloud
I was in some sort of arena-like thing with a tier at the bottom and an upper half-crescent teir,and i had a katana.(i am into that kinda stuff).it had a sandy floor and there were a few other people with me,all capable of fighting.
This to me shows that you currently feel that you're in conflict with others around you, and that you feel as though there is no escape for you personally. But you don't feel vulnerable, yet you are aware of the strengths of others around you, and know that you are in for a tough time.

Quote Originally Posted by SummonerCloud
for some reason,there was someone i liked there...like,really liked/loved...[
Obvioulsy in the situation mentioned above, you feel as though there is someone you care about caught in the crossfire. You feel as though in someway that what is happening to you is signficant to this person. They may not actually be involved directly with your personal conflict, as you may wish for this person to be involved in order to be closer to them.

Quote Originally Posted by SummonerCloud
heh.in order to get out,we had to operate two mechanisms locked by three pillars each,wich only barely came out of the ground(like,at ground level not even an inch).three were on each tier,and in the center were screw like things incredible hard to turn.once turned quite a bit the pillars popped open like on hinges,and once all six were opened we could escape.
Again this is your interpretation of your struggle. You see it as a very difficult, perhaps impossible task to overcome. It may be a bit literal to think there are three direct obstacles for you to overcome. Rather these are representations. The fact that you can remember them so fully suggests that you are acutely aware of the problems you are facing, and are most likely already attempting to find a solution for them.

Quote Originally Posted by SummonerCloud
there were strange,pale humanoid creatures all over,that i dunno what but somehow used fire to attack us.somethign happened with one of them and burned my wrists or somthin.really.before i killed it,that is. thats all that i remember,its mainly the setting i seemed to notice.
The humanoid creatures may simply be a random element, since you say you remember the setting more meaning that that was the dominant theme of the dream and therefore where the majority of the message can be found. They may suggest a human influence in the problems you are facing. Generally speaking we tend to warp human beings in our dreams into something they're not. Be it through their appearance, their behaviour or details about their lives (for example in one dream I had I kept calling a friend of mine Greg, even though his name isn't Greg). These may be warped manifestations of the people who are either causing your problems, or are aggrevating them. The fact that they damaged your body suggests that they have already struck at you and that you feel helpless to defend against their attacks, but strong enough to see them off at least.

Don't take any of this as cannonical, but maybe it'll get the mind gears grinding.