An Eventful Battle

Rumbling Goliath spawns by the Circle of Inner Binding in Galson's Lode, just east of Stromgarde Keep.

Thundering Goliath spawns ontop of the hill between High Perch and the Circle of Elements.

Cresting Goliath spawns just north of Highlands Mill.

Plaguefeather spawns east of Drywhisker Mine.

Ragebeak spawns south-west of Newstead.

Fozruk spawns south-east of High Perch.

The Branchlord spawns just north of Highlands Mill.

Yogursa spawns between Newstead and Hatchet Ridge.

Venomarus spawns north of Hatchet Ridge.

Skullripper spawns south of the Circle of Elements.

Wistel Silversnitch says: Ooh, look at the size of THAT thing. Hey! Anyone wanna go kill it?

The Motherlode event (Lost Caravan) spawns at Drywhisker Mine, just east of Ar'gorok, and needs to be escorted back to the base.

Wistel Silversnith says: Looks like our miners hit the jackpot! You get it back to our base in one piece, and we'll all benefit greatly.

The Hostage Rescue event takes place south of the Circle of Elements, at the T-junction.

Wistel Silversnith says: Some of our pals got caught out there. Wanna give 'em a hand?

Typically, I'd see one or two events occuring during a battle, and only rarely none, so getting everything done is entirely up to RNG. If you've seen one or two spawns late in the warfront, you can just leave and requeue instantly, without getting locked out.

Sadly, another achievement that should be account-wide, so you could gear up alts while progressing on this. But alas, 'tis not.

The events are indicated by a star on the map and requires no specific mechanics to spawn. Good luck!

I've farmed this out as Alliance. Here are some things I've found out:

- A random event will spawn between 10-13 minutes after the start of the game. A second event can happen between the 20-25 minute marks. Sometimes the game is already won by then, and sometimes there is no second event for whatever reason. I have never seen three random events in a single game, even in a map that lasted for 35 minutes, but other people have reported it happening in the comments.

- This achievement is not account-wide. It must be done on a single character, and by the time you get all 12 rares down, you will no longer need warfronts for anything other than achievements. Trust me on this. The RNG is killer. You will see many duplicates. There are also random events that can happen that don't count for the achievement. On Alliance side at least, there are Witherbark troll invasions, Stolen Loot, and a Goblin Trike event that don't count.

- The most efficient way to farm this achievement is to join a fresh warfront and wait for the first random event to spawn 10-13 minutes into the game. If the one that spawns is one you need, go do it. Either way, once you've seen the first random event, type /afk to leave the game and then queue for a new warfront. You don't get a deserter debuff if you do it this way. At current gear levels, the game is often won before the second random event spawns, which leads to more of a time investment than simply leaving if you don't need any of the rewards.

- Note that you will be automatically kicked from the game for inactivity if you tab out and just do nothing while you wait. You need to at least move your character every 2-3 minutes. Other players in the raid can also vote to kick you for inactivity if they notice you AFK.

- When you get to the nine minute mark on the ingame timer, drop what you're doing and head to the spawn point of a random event that you still need. One of them, the hostage rescue, can only be done by a single player when it spawns. Other events feature bosses with low health pools that fall over if a geared player engages them. As you must tag the rares to get achievement credit, this is bad news if you are on the other side of the map when they spawn. There is one random event that you can get credit for despite not doing anything, and that is the Motherlode (AKA Lost Caravan). Once the event is complete, any player can click on the chest that spawns next to the Workshop in the Alliance base to receive achievement credit.

- None of the random events are based on current map progress. It is completely random which ones the RNG decides to give your instance, and I have not found any way to manipulate it.

- If you decide to complete entire warfronts while focusing on this achievement, note that completing random events that you don't need will not make further random events spawn any faster. It is entirely timer based. More than one random event can be up on the map at once if nobody clears the first one before the second one spawns.

For the Hostage Rescue portion of the achievement, Wistel Silversnitch will emote saying, "Some of our pals have been caught out there. Wanna give 'em a hand?" You need to make your way to the ogre cave near the Circle of Elements. Once inside head up the right-hand side of the cave to the main platform and rescue the hostages.

In addition, this is the same location as the event when Wistel also has the voiceline for, "Hey! Someone's nabbed a bunch of our goods! We gotta get 'em back, PRONTO. Preferably with interest." A chest will spawn at the same platform as the hostages and, when collected, will grant 100 iron resources.