Batman: Arkham Asylum

Batman: Arkham Asylum Achievements

Crack The E Nigma

Solve every riddle on the island  

Once you solve every Riddler challenge you will be rewarded with this achievement. This may seem quite tedious to start with as there are 240 challenges through Arkham Island but it doesn't take that long to complete. You won't be able to collect every single item from the start of the game, you will need to acquire upgrades for your weapons such as:

  • Answer the riddles
  • Destroy the chattering teeth
  • Find all the stone plaques
  • Collect every audio interview
  • Find all question marks
  • Collect all the Riddler trophies

You will need the following upgrades to access all the challenge items:

  • Explosive Gel
  • Batclaw
  • Thee Shot Batclaw
  • Cryptographic Sequencer (Distence Upgrade)
  • Zipline

You won't start out with these items as you acquire them while progressing through the games story mode. Before you panic about missing any of these collectibles you can go back in a free roam style to collect all the challenge items at the end of the game. Just continue from the main menu.

While playing through the story you will find maps which indicate where all the Riddlers challenge items are located. Make sure you pick up all these maps when you see them to save any hassle finding each item. There not hidden away but they will be on your patch or in plain view.

If you are stuck on any of the Riddler's questions use the following site:

Riddler's Challenge Guide

Rate this achievementAverage Rating (Based on 1 votes)
User Comments
Comment #1 by m36oz9tag
Monday, March 21, 2011 @ 02:31:56 AM

if you finish the game and have all the gadgets then just look for the maps and then achievement unlocked!!

Comment #2 by m36oz9tag
Monday, March 21, 2011 @ 02:33:31 AM

but the teeth are hard to find.

Comment #3 by Azjhal
Thursday, March 31, 2011 @ 09:00:29 PM

the best thing to do is to destroy the teeth as you find them

Comment #4 by Shoot em all up
Sunday, July 03, 2011 @ 12:29:08 PM

Just use the maps given to you in the guide, they show everything you need to know, including teeth (which do not show up on the secret maps).

Comment #5 by martinlindstrom
Tuesday, July 12, 2011 @ 05:52:13 PM

yeah the teeth are a pain.. And then think about arkham city.. I heard there will be about 400 riddler collectibles..?

Comment #6 by The Mad Hatt3r1
Saturday, September 03, 2011 @ 08:27:16 PM

i did all of this without a guide took 9 hours, riddles are fun :D

Comment #7 by LadyDuBois
Tuesday, September 06, 2011 @ 06:22:12 PM

This is much more rewarding when you dont have the guide. Plus the maps are essentially a guide.

Comment #8 by Green31Goblin
Tuesday, October 11, 2011 @ 12:43:55 AM

This is taking me foreverrrrrrrrrr

Comment #9 by Purple Wedge
Tuesday, October 18, 2011 @ 11:07:25 AM

i didn't realize until a fair way through that the chatting teeth are part of the overall riddle score! Like others have said, destroy them all when you see them as it's hard finding them later on!

Comment #10 by lancecourtney123
Sunday, November 06, 2011 @ 11:08:37 PM

Do I have to be worried about finding absolutely all of these as I go through the game or will there be opportunities to go back and find them when the game has finished?

Comment #11 by the dude1978
Sunday, November 13, 2011 @ 03:33:36 PM

this one did my head even though i used youtube. there was one riddler trophy i couldnt get to in the caves because the blue glowing bars blocked my path.i gave up on awesome game though.

Comment #12 by garnetscrystal
Sunday, August 19, 2012 @ 10:36:40 PM

Best website I've used to find everything with details:'s_Challenge#North

Comment #13 by LordFlasHeart77
Wednesday, April 24, 2013 @ 06:37:46 AM

does anyone know how to get down to the lower level of the medical facility once you have completed the main story as the elevator in the sanitoriam is locked any ideas?

Comment #14 by ChavWarrior03
Thursday, October 31, 2013 @ 04:35:45 PM

I just completed yesterday and it is a pain in the ass, the best about it.........hearing the riddler getting arrested and I said riddle me this "who "puzzled" me and will be in the prison cell soon?"

Comment #15 by Dan Sabia
Sunday, December 08, 2013 @ 03:11:42 PM

how do you save the game. after I collect them they go away once I leave the game

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Game Info
Rocksteady Games


US August 25, 2009
Europe August 28, 2009

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User Score is based on 3508 user ratings.