I'm a lvl 30 light side guardian (and it wont let me lvl up any more) but..

You need to have heal/master heal or improved heal. And need force crush or lightning storm. First use lightning storm or force crush until she dies or you lose force keep runing until your force recarges and heal yourself (keep repeting this until keria dies) the second time you run around (she is unarmed and dosnt attack so she is vunerable but her floating lighbsabers are quite powerful so ry to avoid them)

use lightning storm or force crush keep repeting this until keria dies (I think force crush is better to use but lightning storm is good as well.

There you have beat keria. I have done this at level 16 jedi guardian and sith lord level 9 so if you are level 30 it will be way easier

Sorry about spelling mistakes and wrong words but I hope I've helped.

Hi how are you doin , to answer yor question it's like mikeopen40 said if you are indeed a level 30 light side guardian then you should be able to beat her, but if you just want to finish the da** game then hear are a few tips.Force powers that can be used are force breach+darkside-power kill, combined with master flurry, if you take a hit you can pause the game goto the screen witch shows you your items and give yourself a medipack,(you can only use 1 item from this screen wile in combat mode,untill an atack comand has been compleated, but what it means is that you don't have to wait for the que actions to get that heal. Yes you could use master heal but it takes force power that could be used for attack.) Once kira has been defeated for the first time youll go through some dialog with her then fight again but this time against three (3) lightsabers, my advice is to run and hide and try to get them one at a time, much easer to beet them on their own, lets face it if you beat darth sion, kira is not as difficult in my book. To answer your question about leveling up at this point leveling up is kind of umm whats the word,ahh yes pointless........ the most powerfull jedi I have been is a level 4 guardian and level 46 weapon master with all skills all over 100 except persuade only a 54 on that one, all force powers and strength at 30. all leveling up should be done befor you goto malacore .If you would like to know how this is posible just ask the question. Hope this helps .MAY THE FORC BE WITH YOU.......................................

Well, since you're a Guardian, I assume you have pretty good skills with your saber. Naturally, you have some Force Powers as well. I also figure you have several items at your disposal. So, combine them. Get 'stim happy,' lay some mines, and use Stealth and Treat Injury to the greatest extent you can. If you find you still can't own her the second time around (if it's the first time you're effectively screwed), run from her floating lightsabers. If you do it just right, running behind a pillar when they lose sight of you, they won't chase you anymore. You have a clear shot at Kreia now--use blaster(s) or Force Powers.

You can do it.

When I did it I used force crush and killed here by only using that first and the secound time I just ran around and the swrods didnt even hit me. I just used force kill or watever it's called and that just keeps killing her till shes dead or you run out of forse