To get to this instance, head to ( 215, -48, 667 ) /waypoint 215, -48, 667 in Commonlands, then head east down the narrow valley from there. The entrance is at ( -4, -48, 729 ) /waypoint -4, -48, 729.
Starting with LU24, access for Bloodskull Valley is no longer required for those with the quest The Return of the Light.
In order to enter the Bloodskull Valley: Maulic's Stronghold instance ALL group or raid members must talk to Amulius Ramio at ( 24, -46, 725 ) /waypoint 24, -46, 725. He is crouching behind a big rock just outside the BSV entrance. Hail him until he goes through his entire dialog. This may entail talking to him two times or more, depending on the conversational choices you make.
Drull is in the fourth wave of a horde of level 22 and 22v, they come in large groups of 5-10 it seems. More will aggro after a specific time. If you die, it does not take you out of the instance, keep hacking away until the General shows up, kill him and exit. Keep in mind, you only need to kill Drull, not the entire encounter he is in.
'**NOTE** There is a 12 hour lockout timer for this zone. If you leave before killing General Drull you will need to speak to Amulius Rami after the 12 lockout passes to regain entrance. '
Speak to Cannix. A group of one Lucanic Knight Initiate (19^^ heroic) and two a Militia guard (19 heroic) will spawn, kill him, and then (if they're not gray to you) they will attack you. You must kill them to complete the quest even if they're gray.
Note: You must wait for the Lucanic Knights to kill Cannix first. Cannix is no longer attackable and the Lucanic Knight and his guards are non-aggro. Just step back and let them kill Cannix, then kill them to complete the quest. If you kill the knight and guards first, just talk to Cannix to get them to re-spawn.