Azdalin is arguably the harder wurm to get to spawn in order to get your Wurmslayer.
He spawns in the large crater area southwest of the giant fort, as far south as the hornet hill, and as far east as the road leading south from the giant fort. He has no set spawn location, just a large area.
His spawn cycle has a timer of 64 seconds, which is the SAME as all of the rest of the trash in the area. He shares a spawn cycle with the named gorilla Gullerback which is the easiest way to force an Azdalin spawn if you manage to catch him up.
To spawn Azdalin simply clear the entire area specified until either Gullerback or Azdalin spawns. If Gullerback spawns simply pause all killing until everything has had a chance to respawn, grab a tracker, and then kill Gullerback. Wait 64 seconds and the next mob on the cycle should have popped up to the top of tracking if sorting by spawntime. Continue killing the single mobs that spawn every 64 seconds until Azdalin spawns. Enjoy your dragon scale.
Edited, Sep 22nd 2016 9:44am by Bobbybick
Edited, Sep 22nd 2016 9:44am by Bobbybick