Well, It was, I bet, one of the hardest quests I ever! did… but I got it, just stage 2 though xD.
Actually I thought I had failed, the monster casted heal just when he was to approach the final line. And that was 0,x seconds remaining, Then I noticed, Quest Succeeded and I was OMG WTF!! Screamed and everything.
I had to make an almost perfect combination of luring, predicting, evading traps and whatsoever and zoomy helps a lot too. I was using SM potion and the SM +3 boots.

Im pretty sure, that, to get more points you have to lure more than one monster at a time, if not its impossible.