GW2 Behind the Mask achievement guide

GW2 Behind the Mask achievement guide with detailed walkthrough. Behind the Mask is an explorer achievement released with the new Halloween patch. It is also a skritt burglar/treasure chest related achievement and therefore will have a number of possible locations within the zone. For this achievement, you will want to look for chests in Plains of Ashford, Diessa Plateau, Fireheart Rise and Fields of Ruin.


  • Press ctrl down while looking for these chests as it will highlight their names.
  • Best to do this with a friend so you can find the skritt burgler faster and reduce the waypoint costs
  • Do not use any pets/clones if possible as the skritt may transform your pet instead. This is especially a concern for rangers.
  • Focus on low damage attacks so you don’t kill the skritt burgler too quickly

Plains of Ashford (5 locations)

Plains of Ashford possible location #1 – NE of Cadem Forest

Location submitted by reader/redditor Ayesafaile, I was also able to get the achievement at this location.


Plains of Ashford possible location #2 – NW of Loreclaw Expanse

Redditor Kholdy found another possible location for the chest. This one is in SE Plains of Ashford.


Plains of Ashford possible location #3 – The Toppled Wall

Submitted by anonymous reader and Vertigo.NE of Ascalonian Catacombs entrance there is a tunnel with two ghosts (one veteran) at the end that will chat for a bit before attacking you. This tunnel might contain a chest.


Plains of Ashford possible location #4 – SE of Victor’s Presidium

Reader Nickchanger found a chest at this location on the SW portion of Plains of Ashford.


Plains of Ashford possible location #5 – Martyr’s Woods- Unverified

South of Martyr’s Waypoint


Fireheart Rise (5 locations)

Fireheart Rise possible location #1 – Toughstone

Reader Jayntree found a chest in Fireheart Rise NE portion (Toughstone area)


Fireheart Rise possible location #2 – Onager Bivouac

Reader Stoon and Xewell found the chest at this location on the NW portion of Fireheart Rise.


Fireheart Rise possible location #3 – Forge Plains

Reader Nameo found this chest in Fireheart Rise.


Fireheart Rise possible location #4 – Apostate Wastes

Try these caves filled with spiders and veteran spiders


Fireheart Rise possible location #5– Switchback Canyons


Diessa Plateau (4 locations)

Diessa Plateau possible location #1– Burrows of Moledavia – Unverified


Diessa Plateau possible location #2 – Incendio Templum

SE corner of Incendio Templum


Diessa Plateau possible location #3– Ruins of Oldgate


Diessa Plateau possible location #4 – Spider Nest Caverns


Fields of Ruin (2 locations)

Fields of Ruin possible location #1 – Thunderbreak Hills – Unverified


Fields of Ruin possible location #2 – Wildin Narrows


See Halloween Patch Explorer achievements guide for other achievements.

  • Hynadire

    Thanks for guides, did you have found other location for the skritt ?
    I’ve wait him in this spawn but never see

    • Found another location that i posted. You may try and see if it is there 😀

  • Adrian

    Tried both luck :<

  • crazylin

    the last spot works for me, but when i open the chest, i never get the transformation, 2 times no transformation.

    • Harain

      you need to chase the skritt runner and keep hitting him to get transformed

      • crazylin

        i did 2 times, nothing… to the end, to failing dynamic event.

  • DeejayCastellano

    Still nothing myself with both locations also. Anyone else?

  • crazylin

    OMG 3rd time, no transformation, this time i killed him.any tactic to get transformation sucess 100%?

    • crazylin

      4 time, nothing i neer got the teletransformation 🙁

      • sipertruk

        In my experience with all the skritt achievements : in 5 tries only once he did nothing at all, you may have some really bad luck or are you using a pet or clones in the fight ? Those should be avoided so he target only you. Also one time the only thing he did was to transform a random aggressive npc who was near.

        • crazylin

          2 characters, 1 guardian, 2 warrior, no pet, no clones i was jue me alone, no other players, so im waiting for the 5. ty for the reply

    • mptyspace

      crowd control seemed to work

  • Ed

    I’ve checked and camped both locations with no luck. So deciding to work on something else I went to fireheart rise and found the chest with the skrit burglar! Unfortunately after kiting me across hundreds of yards he decided to run into a champion event that was nearby and the mobs killed him. I got exp but the DE registered as fail so no reward for me.

    • crazylin

      hey can you screenshot where is the chest? ty

    • Dalv

      hey, if your location is different from Xewells then can you be more specific? a screenshot would be great. thanks

  • Ryze

    Anyone knows the respawn rate on these chest?

    • Not sure if they respawns or just move to another location.

      • Ryze

        I was kinda starting to think that aswell… If they only move to another location then someone probably hasnt found it on my server cuz it’s not on those two locations.

        • drlito

          i checked 3 spot with diff characters, possible more locations, or isnt move to another location.

          • Ryze

            Been checking the 4 spots mentioned here several times now and still nothing.. Either there are more locations or maybe it’s bugged? 😛

  • Xewell

    Here is a location for the Chest, sry i didn’t get a screen of it, but i did the achievement here :).

    • Xewell

      In Fireheart Rise btw..

  • Guest

    I didn’t find any chests at the locations posted above nor at the one in Onager Bivouac (Fireheart Rise).
    Guess there have to be more spots.

  • Jayntree

    I found another site for the chest in The Toughstone area of Fireheart Rise.

    • Pomphe DrakkarLake

      Screenshot maybe? 🙂

    • CrimsonSock

      Congrats, although you should have let me know you were scouting around, I would have partied up!

    • thank you, I will add it in 😀

    • Ryze

      Nice find! Although still no luck for me… just checked all places, including Onager Bivouac where someone claimed to have found a chest aswell… :/

  • Stoon

    got it at the Bivouac location in with all the devoureres

    • thanks, somehow missed this one, Will add it in 😀

  • Guest

    Still no luck for me at the 2 spots in Plains of Ashford and the 2 spots in Fireheart Rise 🙁

    • Ryze

      Yeah same here…

  • Guest

    No one else had any luck finding the chest at another location?
    I’ve been farming those 4 spots as soon as they were known without any luck at all.

  • Anonymous

    I don’t have a screen shot; But a friend and I have found a chest in Plains of Ashford in the Toppled Wall area, Northeast of the AC dungeon entrance. There are two tunnels parallel to each other. One filled with Skelk, and the other with Ghosts. When entering the tunnel on the right (the one full of ghosts) there will be a Rich Copper Vein, and (hopefully) a chest. When approaching, a veteran ghost and a ghostly peasant will spawn and talk for a moment before saying “We’re under assault!” and attack you. The Skritt will then run from that tunnel, to the tunnel to the west filled with Skelk.

    • Vertigo

      Did it also here, thank’s cause i was 5 days hunting this chest with no result

      • cool, ty. I will add it in 😀

        • Grillzy

          I also found it here.

  • mptyspace

    I used the chest at location #2, but didn’t receive the achievement update.

  • Ash

    Fail 2 times at chest location #4 (never transformed) but first try at the bivouac in fireheart Rise and transformed ! 🙂

  • Ryze

    Constatly checking all the 5 spots mentioned here, and no luck AT ALL.. Anyone having any luck?

    • nightrunner

      location 4 is up, last checked a couple of hours ago. I had mine at same location too

      • Ryze

        Well finally got it, had to play at 5 am in the morning when no one was online and the chest was finally at location 2! Thanks!

        • grats! 😀

          • Ryze

            Thanks man! 🙂 Great guides btw 😉

  • Jester

    found the chest at Possible Location #3 but didn’t get the achievement

  • Nickchanger

    hi here

  • Nameo
    • Nik

      THANK YOU!

    • Morten Møller Jakobsen

      Thank you indeed! It was there.

    • Added 🙂

  • Graphics

    i went to all these locations, and found no chests.
    i think there is more locations,,,

  • Taek

    I saw came across the skritt burglar in Burrows of Moledavia in Diessa Plateau today. At least I think I did. Was busy killing Drege (doing the area for world completion) and as I ran out came across a loot bag like you get at the end of the event and when I ran back and found the purple glowy loot bags. The reason I recognised this was I did all 4 of the achievements yesterday with some guild mates. We really struggled with this one as we were going to all the locations listed in the post, the comments and the wiki, but couldn’t find the chest. It took 1.5 hrs to spawn in a known location. Maybe others can check this out and confirm it.

    • I went there and didn’t find anything, let me know if anyone have a more specific spot 🙂

  • matt

    do these spawn once a day? or

  • akhsunamun

    Confirmed chest at location #6 on 18/06/13, while waiting for the Dragon Bash Celebration to begin 😉

  • glen

    found it but somehow does not count toward the achievements

  • Evil Killer

    I have found 3 times until now the chest and all 3 times he not transform me into a raccoon and i really start to get annoyed does anyone else have this problem?

  • Dagnis

    Dulfy, I recommend you check out the wiki page, it has a few locations you don’t have.

    • Just updated the guides, should have all the missing locations

  • Brett

    Verified at Diessa #3 Ruins of Oldgate.

  • Razinth

    Here is a screen shot of: Fireheart Rise possible location #4

  • Htuocles

    Verified Fireheart Rise location #5– Switchback Canyons

  • Aweburn

    Diessa- Burrows of Moledavia Verified

  • Dolan

    Plains of Ashford possible location #5 – Martyr’s Woods- Verified

    • Marsel Davis


  • Strider

    Verified location 5 at Plains of Ashford – chest was there, was able to open, but a new player charr killed it before it could transform me.

  • narg

    for all, who find chest, but did not get achiev: after open chest ans skrit run away, attack him, and as skritt run away, he sometimes throw daggers (or what it is), and this attack MUST HIT YOU to transform you in to creature! if you dodge it or did not get hit, you did not get achiev (correct me if I am wrong, but this work for me)

  • Elena Callegari

    hint: if you’re a guardian and block/retaliate the damage he deals on you, you won’t get transformed. better switch to an alt or change your traits if you want to get it done. if you’re lvl 80 i suggest doing it half naked, or without trinkets at least

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