Riddle us this: how do you solve every riddle in Batman: Arkham Knight on the PlayStation 4? Gotham City's most putridly dressed puzzler is back in Rocksteady Studios' latest open world adventure, and he's brought a whole slew of conundrums with him to tax your grey matter. Fortunately, you won't need to flex your thinking cap to solve them all, as we've done all of the hard work for you in the space below.
For each of the Riddler's, er, riddles that you solve, you'll unlock a Gotham City Story, which you can then read for additional background on various characters and locations by tapping the touchpad at any time. To close a conundrum, you'll need to scan a particular object by holding down the up button on the d-pad – though you will need to frame things properly. Remember, you can push the R3 button to get a close up should you require it.
The first area that you'll encounter in Batman: Arkham Knight is less densely populated than the other islands, but it still has plenty of riddles for you to solve.
Riddle 1: Bones stripped bare beneath a warning light, pay heed, seafarers, not to feel his bite.
Solution: Go to the bottom of the lighthouse near ACE Chemicals. There's a smouldering pile of bones inside – scan it.
Riddle 2: An open house for bed and dinner, is this sanctuary run by saint or sinner?
Solution: Just by Kirk Langstrom's laboratory you'll find a humble establishment named The Deacon's Mission. Scan the whole building.
Riddle 3: A bat uses these to see at night, the doc's didn't work and his cure caused a fright.
Solution: Inside Kirk Langstrom's laboratory – which is part of the Creature of the Night quest – you'll find a sketch on a white board at the end of the corridor once you've taken the lift. Scan it.
Riddle 4: Overgrown, abandoned, the inmates set free, madness could never be held in me.
Solution: Go to Falcone Shipping and look out to the sea. Push R3 to see the distant remains of Arkham Asylum on the skyline, and scan it to solve this obscure riddle.
Riddle 5: I bet you weren't invited to this lavish do, I wonder how many went dressed up as you?
Solution: Enter the Clock Tower from the bottom – not the top – and go through the door. You'll find a framed poster on the wall for the Masquerade Ball. Zoom in on it and scan it.
Riddle 6: Joining your mission can come with a cost, this empty reminder shows just what she lost.
Solution: Once you've got the Remote Hacking Device, head to the top of the Clock Tower and enter Oracle's office area. At the back of the room is a power symbol – hack it to reveal the Batgirl costume. Scan it.
Riddle 7:She stands at our center that we may not weaken, a symbol of hope, a towering beacon.
Solution: From the top of the Clock Tower, you should be able to see the Lady of Gotham statue. Just zoom in on it with R3 and scan it.
Riddle 8: Hope shines brightly in a city this dark, find the source of that signal and you'll soon hit your mark.
Solution: To the rear of the GCPD building, you'll find the Bat Signal perched atop a set of scaffolding. Scan it.
Riddle 9: Always looking for names to besmirch, where does this newsman conduct his research?
Solution: Inside the GCPD building, head into the Interview Room and scan Jack Ryder's desk.
Riddle 10: A souvenir from a previous life, why hold with a hand when a hook will suffice?
Solution: Again in the GCPD building, head to where Officer Cash is standing and look for a family photo on his desk. Zoom in so that you can see the full picture and scan it.
Riddle 11: Business is best when Bats need killing, a mercenary's life should receive top billing.
Solution: In the GCPD building once more, go in the communications room behind Officer Cash and scan the photo on the wall.
The second area that you'll reach in Batman: Arkham Knight is much bigger and more densely populated, but there are actually fewer riddles to solve in Miagani Island.
Riddle 1: The highest building in Arkham City. A Strange man worked here, who took no pity.
Solution: Climb to the top of Wayne Tower, and then look out onto the horizon for a tall building with antennas off on the horizon. Zoom in and scan it.
Riddle 2: The Prince of Gotham sits high in his tower, yet this picture recalls a happier hour.
Solution: Go inside Wayne Tower – there's an electronic door about half-way up – and look for the private bar. Scan the picture above it.
Riddle 3: It doesn't take much to tame a Cat, make them wear this and then call the bat.
Solution: Once you've decided Catwoman's fate, scan a close-up of her collar in the orphanage to solve this head-scratcher.
Riddle 4: You forced this contraption over my brain, I'll reward you with punishment, debasement and pain.
Solution: In the orphanage again, go in the room beyond the one with the collar, and follow the corridor round to the back until you find a desk with a fan on it. Scan the hard-hat like contraption on the table.
Riddle 5: Friends of the Waynes though not as wealthy, their memorial ward keeps Gotham healthy.
Solution: The Elliot Memorial Hospital is one of the biggest buildings in Miagani Island. Just perch opposite it and scan the entire building to solve this.
Riddle 6: A natural cure for Scarecrow's doom, your savior's gone but still in bloom.
Solution: This one can be a little bothersome. Find Poison Ivy's fortress located in between Bristol and Grand Avenue. Climb the building about half-way and you should find a lone flower. Scan it.
Riddle 7: Disarming, charming, quite the inquisitor. She'll pull back the vale, whoever her visitor.
Solution: Not far from Poison Ivy's fortress, you'll find a building with a neon Vicki Vale sign on the roof. Just scan the whole thing to tick this one off.
Riddle 8: Are you suffering from a mental split? Take out the trash before you defend it!
Solution: In the lower-left of the map at ground level you'll find a sushi restaurant as well as a waste disposal shop front named Hell's Gate. You need to scan the building.
Riddle 9: A former warden who had a Strange turn, his appointment as mayor was a cause for concern.
Solution: Near to Grand Avenue, in the alleyway next to Lacy's Department Store, look for a piece of graffiti canvassing for Quincey Sharp.
Riddle 10: The League of Assassins stuck blades through hearts, now they impale each other's art.
Solution: In the Kingston area near Mercy Bridge search for a make-shift shack down an alleyway and scan it.
This is the last major area that you'll reach in Batman: Arkham Knight, but, while it's packed with other objectives, there are still only ten riddles for you to solve. E. Nigma's been slacking off.
Riddle 1: Crusaders of old had a trusty steed. How much horsepower does a Dark Knight need?
Solution: This one's really darn cheeky. All you need to do is scan the Batmobile to solve it. Damn you, Riddler.
Riddle 2: Far away the deflated brute roams, leaving behind what he couldn't ship home.
Solution: To the western part of Port Adams, look for a Sionis Industries container that's been opened. Inside you'll find an open crate which you need to scan.
Riddle 3: This tumbledown ruin's not looking its best, what do you expect from the Penguin's old nest?
Solution: Head to Cobblepot Manor just west of the Otisburg area of Founders' Island, and scan the whole front of the building to solve this riddle.
Riddle 4: This cold corporation changed his life forever, curing his wife now a chronic endeavor.
Solution: Again in the Otisburg area, look the Goth Corp building and zoom in on its logo with R3. Scan it to solve this puzzle.
Riddle 5: Roll up! Roll up! For the circus of strange, this porcine professor is clearly deranged.
Solution: As part of the Perfect Crime quest, enter the Pretty Dolls Parlour and run through the corridor into the main circular room. Turn back from where you came in and to the left of the doorframe is a poster. Scan it.
Riddle 6: He saved the date! All Hallow's Eve! But this calendar killer took his leave.
Solution: Go to the underground section in Drescher and look for a room in the building structure that you can grapple into. There's a desk and a white board with a calendar on it in here; tag it to tick this one off.
Riddle 7: He lives and dies in seven days, this beast you've tamed but his song still plays.
Solution: Again in the Drescher area, look for an orange gated area and grapnel over it. Jump to the left and go through the door that you find here. You'll be in a room with a gramophone and a wanted poster. Scan it all.
Riddle 8: A psycho killer's grim design, what has an angle but just one line?
Solution: You're looking for the two airships on your map. One of them is closer to the ACE Chemicals than the other. Go to the tip of this northern ship on Founders' Island, and take a snap of the bodies that you find here.
Riddle 9: An ancient order, lust for power consumed, their patron saint is here entombed.
Solution: Head to the cemetery near to Ryker Heights and scan the glowing tomb stone to the bottom left of the building that you find here.
Riddle 10: A million dollar home for a spoilt child, his parents are dead but his parties are wild.
Solution: Climb up the construction area as high as you can in Ryker Heights, and then look out onto the horizon for the lit-up mansion. This is Wayne Manor, so zoom in on it and scan it.
As a contained area, there aren't many riddles to solve in the Arkham Knight HQ. Still, you do want to get them all, don't you?
Riddle 1: With a fluffy white coat and ears standing tall, what burrowed the hole in which Alice did fall?
Solution: Head about three quarters of the way down the ventilation shaft and look for partially closed off walkway. In here, you'll find a smashed cabinet with the Mad Hatter's mask in it. Scan it.
Riddle 2: A psychotic doctor who caught the fear bug, the fruits of his research: a powerful drug.
Solution: In the main section of the Arkham Knight HQ – accessed by taking the lift – look for a room filled with green gas. Scan the stench.
Riddle 3: Vengeance burns darkly inside the betrayed, as they stare at reminders of debts unpaid.
Solution: Once again in the main section of the Arkham Knight HQ, head under the stairs and look for a notice board with photographs and a knife pinned to it. Scan the whole thing to solve this.
As mentioned earlier in this guide, the Stagg Airships are located south of Ace Chemicals and to the western side of Founders' Island. There are two ships: Alpha is the lower of the two, while Beta is on top.
Riddle 1: No Dark Knight, Stagg's past is no figment, it's just lacking the usual pigment.
Solution: In Stagg Airship Alpha, enter the Research Laboratory and look for the weird white monkey that's hopping around in its cage. Scan it.
Riddle 2: Need something moved quickly, in a freezer? This company's owned by a cockney geezer!
Solution: Enter the Subject Testing area of Stagg Airship Beta and look for a poster that reads: 'You name it, we'll freeze it.' Zoom in and scan it.
Riddle 3: A bragging reporter's worse than a narc, but perhaps the assassin has found his mark?
Solution: Stay in Stagg Airship Beta, and look for the Biological Engineering Department. To the northern part of the area, look for a table with lots of cables running beneath it. On the desk is a magazine with Jack Ryder on the cover. Scan it.
The Panessa Movie Studios are located in Bleake Island, so you're going back to where the madness started. There are three more riddles to find here, and then you're done. Hooray!
Riddle 1: You? A father figure? Don't make me laugh. You overwork and break your staff.
Solution: Look for the quarantine area, where you'll find an isolation cell. Just scan this to cross it off your list.
Riddle 2: She and her love are no longer together, she'll keep the flames burning forever and ever.
Solution: On the way towards Stage A, there's a grill that you can open using the voice synthesizer. Towards the end of this you'll spy a statue, which you need to scan.
Riddle 3: A visual artist with burning ambition: prove he made movies before his ignition.
Solution: Now carry on to Stage A itself and look for the Inferno poster that's on the wall in the room through the double doors to the right. Boom. All done.
Have you solved all of Batman: Arkham Knight's riddles yet? Got any extra tips to share? Riddle us this in the comments section below.
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