Some people have already mentioned that Uber Lilith can sometimes become bugged with a full stagger bar unable to be staggered. This is really annoying, but I wanted to make a report for the more serious version: She can literally become unkillable. If you deplete her HP bar in phase 1 with damage over time whilst she is in some animation, she sometimes carries on fighting forever. She has a tiny bit of HP showing but after dealing hundreds of millions of damage to her, she will not go into phase 2.
Uber Lilith phase 1 can be frustrating for a few reasons. Mostly for me, because melee characters are unable to attack her half the time whilst she flies around. But beating that phase just to watch her become unkillable is a really bad experience. Please fix. I presume the cause is the same as the no-stagger bug (which has essentially the same condition but with stagger rather than damage), hopefully they can be patched together.
Its ok, as long as the store works so they can get more money from the lowest IQ players.