by Sentiel Fri Jan 25, 2013 10:01 am
Are you sure your Humanity healed you?
You can get backstabbed without the item healing you in time, thanks to lag.
Anyway.
Crystal Greatsword is this.
To take 1700 HP with one backstab in PvP, he would need to use buffs and Hornet Ring. This weapon cannot be buffed, nor MLGS for that matter, meaning he had to use Power Withing, RTSR, or perhaps Dragon Roar. You would probably need a combination of at least two of those + Hornet Ring to achieve a 1700 HP backstab.
All are easily visible. PW covers user's body in something resembling a red stench and his HP is getting constantly drained.
RTSR creates a big white and slightly red coloured aura around the user's torso.
Dragon Roar requires Dragon Body, which is extremely obvious and he has to use the Dragon Torso Stone (he actuall roars) to boost his damage for a few seconds.
If he did any of that, there's your answer. If he did nothing of the above, he could've cheated (depends on your platform).