User blog comment:Bharatram1/Who is stronger ? Lilith or Azazel ?/@comment-4920092-20120513224839

At ImperiexSeed's request, here is everything Lilith did onscreen, or can be inferred from conversations directly about her.

Immortality. She was the very first demon, thus it is safe to conclude she does not age.

Possession. She has taken various vessels. It is worth noting she displayed the unique ability to possess Ruby's vessel, and send her back to Hell. HOWEVER, it is equally likely that Ruby left her vessel voluntarily and allowed Lilith to take it, since she was working for Lilith at the time, unbeknownst to the audience.

Resilience. It took an extreme amount of energy for Sam to kill her - so much so, he couldn't even deal with Ruby, a fairly low-level demon.

Reality Warping. She was about to make a Faustian Deal with Sam, before she got scared off by Raphael.

Telekinesis. She was fairly adept, able to snap a neck with efficiency.

Energy Waves/"White Light". She was able to create enough energy that it mimicked a gas main rupture.