Stop Bishop's raider band from attacking Vault City

Stop Bishop's raider band from attacking Vault City is a quest in Fallout 2.

Detailed walkthrough
After learning that the raiders are attacking Vault City, the Chosen One is being tasked to find out where they are and kill them. One can directly go to them (near the direction from Vault City to Broken Hills). After that, they must go into the cave. Be aware of traps, like explosives or holes (they lead to bottom level where the radscorpions are). Go to the eastern parts, where there are more traps, but also 2 fenced doors which are locked (a very high Lockpick skill is required to open). The alternative is to study the map in Bishop's safe, then go there, and be transported to the back entrance, earning 500 XP. Then the Chosen One must kill all mercenaries which can be quite tough, given the equipment they possess. After that, collect the dogtags from Angel-Eyes, Tuco and Blondie to open the safe. Inside is some treasure, along with a logbook which must be shown to Joanne Lynette in Vault City.

Rewards

 * 500 XP for discovering the lair (secret entrance)
 * 500 XP for cracking the safe
 * 2000 XP for leaving the area while the mercenaries are dead
 * 1000 XP for showing the account book from the mercs' cave
 * 2500 XP and $1000 for showing the holodisk from John Bishop's safe
 * Note: there may be a bug causing 1000 XP less if both account book and Bishop's holodisk is given to Lynette at the same time (within one conversation), one can avoid this by dropping holodisk on ground (or giving it to companion) and take it later to initiate second conversation with Lynette