Dungeon Siege III

Further to Ponypo2001's fantastic guide, I was playing as Lucas (so a melee character) and this was a very challenging achievement.

The way I earnt this was to switch to a single-hand stance (so shield & sword combo), and found that by using weaker, faster strikes I made more progress than the slower, 2-handed strikes.

I'd run upto her on the first phase, attack a few times then block, then attack again and block etc. etc.
In this phase she has 4 attacks; a 4-strike combo that you really want to block/avoid, launches a spear at you, does a spinning kick and lastly opens a blue portal on the ground that does serious damage. By standing next to her, all but the portal can be blocked, so take advantage and get ready to get your attacks in. If she opens a portal, simply roll away then return to her side and start swinging!

The second phase is definately more troublesome, as the roof collapses, thus blocking parts of the floor. Here, I blocked/rolled the blue fireballs she launches and weaved through her portals, got close and got 4 or 5 hits in before she teleported away. I was also able to use a few 'power' attacks (activated by RT), these were handy.

On my successful attempt, I used my LT +Y 'shield ability', and was never knocked down.

Hope this helps players choosing Lucas - I died about 10 times with the 2-handed stance, but beat Rajani on my 3rd single-handed stance.


EDIT: On my 2nd playthrough as Katarina, this is really easy compared to using Lucas. With Anjali as my AI, I just stayed back and picked shots at her from afar, whilst easily dodging her attacks.
I missed the opportunity to beat a boss using my default gear here, but others should be able to earn that here as well.

EDIT 2: Kronos2215 raised an interesting point - they state that they did this and the Cheev did not pop. The reason? Vampire attribute!
This is a great point, as technically it's NOT 'your' healing ability - but on the flip-side it does 'heal' you! Their advice is to complete the battle with it removed, and re-install it afterward.

For this achievement, you must defeat the first major boss, Rajani without using your defensive stance healing ability.

First thing to mention is that the pews in the room can be destroyed and sometimes have green health in them. Using these DOES NOT void the achievement so don't worry about using these.

For her first form, make sure to dodge when she hurls the spear at you and maintain a distance as much as possible to avoid her spinning attack. With a melee character, you'll want to get in close, hit her a few times then roll away as her other ability is a spinning kick that can hurt.

Second form is the trickier part (at least I found it to be). Trick here is to deal as much damage as possible in short time to the boss. When you do enough, she will teleport away from you and spawn blue fire portals on the ground. DO NOT stand in these as they will tick your life away very fast. Also, be wary of the boss shooting blue fire at you. When you see this, dodge away immediately and make sure not to stand still. If it does hit you, it ignites the floor beneath you and will kill you very fast. Remember, you're not allowed to heal so avoiding damage is paramount.

It is confirmed you are safe to be revived by your partner, thus making this achievement a lot easier to obtain.

Hopefully, using these tips, you will get her down fairly quickly. When I did the achievement I used Katarina and I must say, her ranged attacks helped a great deal.