What weapons are you using mainly and what skills did you put your points in? Im lvl 14 now i think and have 2 skill trees going, 5 pts in shield % and 5 in +crit hits. I have no idea how good the elemental effect is so I didnt bother putting points in that skill tree yet...
Revolvers because they own and make me feel like I'm playin' some Goldeneye shit. However, I pretty much take anything that has a high elemental property on it. I hate SMGs though, well haven't really gotten even a decent one yet I should say. I usually carry around a shotgun for midgets and skags too. So my current load out is a Shock Revolver, Corrosive Revolver, and the Rape Over/Under Shotgun from Sledge. Both revolvers have extremely high damage and the corrosive has a scope so I use it for sniping and the other to take down shields and use from mid-range. Transfusion grenades are also your best friend in the sticky.
It is my opinion that elemental effect is rape and the rate at which Lilith can produce them is even more rape. So yeah, it's some good stuff.
This is the build I'm goin' down.
http://www.borderlandsthegame.com/skilltree/lilith/#21500550055050005050500
I went down the Controller tree first to keep my ass alive, kind of important. I then went down the Elemental Tree, still workin' on it actually, and next I'll focus on the Assassin tree.
I chose this build for a variety of reasons. One, melee? Go fly a kite, I got guns, lots of guns. Second, I think gettin' the cooldown of Phasewalk to 13 seconds is fine, it doesn't need to be any shorter. At 13 seconds you can CC everything and do your job without hinges. As Lilith you already proc weapons more often than not but spark is a must, imo. Elemental damage is just friggin' brutal, make it all it can be. As for the Assassin tree, the crit is a given as to why I picked it as is High Velocity. Enforcer I picked because it just seemed the more beneficial of the other options. I typically do not like the "on kill" (solo players will more-so though) talents but hell, it has good possibilities.
You might wonder why I didn't choose to regen health in Phasewalk. Reason is, is that shields later on will have health regen and if you find yourself in a -good- group you'll have a form of regen. If not, you can use med-packs. I'd rather, at that point, be more powerful than defensive since I can just use med-packs. I think that skill is a convenient skill but just takes to much away offensively in a case where their is another means to produce the same effect. I hope you can get that as it's hard to explain.
I find her bottom skills to be lacking. I can already daze every 13 seconds (AoE) and with guns (single target). I can just equip a fire type weapon to produce Phoenix and Phase Strike is for those who can't aim a gun or find a good one. You could argue it is good for bossing but then I'd argue, "so is my rocket launcher."
I'm more of the type of player who likes to be well rounded than gung-ho at one thing. I think this build highlights all of her useful attributes and strengths. I'd suggest if you want to be a melee power-house to play Brick, you'll die as Lilith more often than not tryin' to always be in the melee fray.