almabrds: From Per Jorner's guide:
Bust the Skulz gang.
You get this from Lars. One way to finish this is to talk to Sherry, the girl outside the room where the main part of the gang is. Convince her she should get out. Return after one day, talk to her again and ask her to testify against the Skulz. Then go and tell Lars, and you'll earn 500 xp. If you visit Sherry and tell her you're not doing so good she'll give you food which heals 1 HP.
* IN<4: Victor will explode if you talk to him. Ha! Ha! Heh heh hee! Ho ho ha!
Another way is a little more complicated, but yields more xp. Go to the Skum Pitt after 16.00 and talk to Neal. Shortly after you end conversation one of the Skulz will hit Trish, and Neal kills him. After this has happened you can go to Vinnie and tell him you want to join the Skulz. Get the Urn as described above; you get 400 xp for showing it to Vinnie (but you can't do this if Neal is dead). Next they'll want you to come along and help kill Neal. You get 300 xp when Neal and Trish are dead, as well as the enmity of Junktown even if you didn't do anything yourself.
* If you talk to Shark and say you'll join him thrashing the place, he'll draw his gun and attack Trish, leading into a normal battle instead of the scripted sequence. In this case, or if you provoke Shark to attack you, you can't ask Vinnie about joining the Skulz. Also if the Skul who's supposed to hit Trish hasn't appeared on the map when you first talk to Neal, the sequence will never happen.
The more decent-like option is to say you need time to prepare and go tell Lars what's up. You can let him and the guards take out the Skulz, in which case you get nothing. Or you can agree to help, which again means a fight at the Skum Pitt. This time you'll have a bunch of Junktown guards to help you out. When the Skulz are killed you get 300 xp for turning against them, and if you talk to Lars you get another 500 xp. You can still choose the evil path after calling for the guards, it just means you have to kill all of them too before you get the xp for killing Neal. If you turn against the Skulz without talking to Lars first you get the same 800 xp, the only difference being there will be no guards at the fight.
* The guards will be assigned to be your allies, but you must attack the Skulz yourself before they know who the enemy is. You can actually attack the bar patrons instead and the guards will help you defeat them, but once combat ends they'll be hostile.
* If you kill the Skulz and the guards, you get the "turn against Skulz" reward, but you'll still be a fugitive since you attacked the guards.
* You have two days to prepare for the fight after you show the Urn to Vinnie. If you wait that long and then enter the casino map Neal will be dead; the game also likes to crash at this point, but if you first enter the map and then rest until he dies it should work. You won't be able to tell Lars about the attack, but you can tell Vinnie you're ready, and the Skulz will then storm the empty bar to no great effect (you can kill them for the 800 xp though).
# The bar fight can be a buggy thing. It's happened that after I helped the Skulz kill Neal I got another 300 xp every time I entered the casino map, plus the Skulz members would spawn anew. Another time when I talked to Vinnie afterwards he gave me the dialogue where he asks if you're ready for the fight. A bug which seems to happen if you already helped get rid of Gizmo is that the guards won't be on your side and will turn on you if you attack the Skulz.
Note that you can't finish the quest simply by killing the gang at the Crash House. Killing any of the Skulz but Sherry won't turn the guards hostile, though.
I am trying to convince Sherry to leave the Gang, and my Speech skill is at 80 somthing % but I just can't seem to convince her to leave, how do I convince her properly?