Greetings Ownedcore!
Here is a small guide on how to get the FOS Achievement "Avast Ye Admiral" and the title "Bloodsail Admiral" on Monster-WoW, the easy way.
Takes around 25-30 minutes depending upon your DPS.
Step 1: Go to Booty Bay, Right-click any Booty Bay faction NPC so you will get "You are neutral with Booty Bay" (This is for those who don't have the Booty Bay Reputation shown up in Character Window)
Step 2: Open the Character Window > Go to Reputation > Find Booty Bay and click "At War"
Step 3: Find these NPCs: Booty Bay Bruisers and start killing them. (They hit around 5k hits so you should be fine with some heals).
Step 4: You will get around 600 Rep for each kill. Now here's the thing, you don't need to lower your reputation all the way to 21000, because on Monster-WoW, the rep bar for getting hated is only 3000. So, you will need only 30 minutes of killing these mobs to get Friendly with "Bloodsail Buccaneers."
Step 5: Once you are friendly with Bloodsail Buccaneers, Take this quest:"Avast Ye, Scallywag". You will get it from an NPC: "Pretty Boy" Duncan
Step 6: Once you get the quest, go to "Fleet Master Firallon" & submit the quest, then take the Quest: "Avast Ye, Admiral"
Step 7: Complete the Quest (Takes around 5 minutes) and Report back to Fleet Master Firallon.
Step 8: Enjoy your new Title "Bloodsail Admiral" =)