Here are the in-game achievements for the game:
Crime Fighter – 10 points
* Stop 20 Crime in Progress.
Available as side missions while you are exploring the open map. You will konw that there is an ongoing crime as it will show up in your HUD automatically while you are free-roaming.
Free Flow Fifty – 15 points
* Reach x50 Combo in a combat brawl.
Easiest to achieve in the combat challenge Intensive Training. Keep playing the rounds. Press Y when the blue prompts from enemies appear, press left stick + A to evade, or if you want to complete the brawl much faster concetrate all your attacks on a big guy, super cape him by pressing B 3x, then punch away multiple times until you can activate shock gloves by pressing left stick + right stick.
Thanks, old friend – 10 points
* Hear everything Alfred has to say.
Available at the Batcave. Always talk to Alfred every each end of a cutscene situated on the Batcave, where you will take control of Batman still inside the Batcave afterwards
Point to Point – 10 points
* Glide across Pioneer Bridge without touching ground.
Do this at the Gotham Pioneer's Bridge at the middle of the free roam map. Start at one end, then keep grappling along the rafters and tap A 2x while pulling yourself up.
Flawless Display – 10 points
* Successfully battle Shiva without taking any damage.
Refer to the Shive Most Wanted Guide for further details.
Point Counter-Point – 10 points
* Complete Deathstroke without failing a single counter.
Self-explanatory but extremely challenging. Reset asap if you get hit during his boss fight if you want to achieve this. Toughest attacks to counter are the 3-hit attacks on his second and third form, so practice those the most. There's really no tip I can give you since it's more of an instinctive issue but anticipation is actually the key, once you have memorized the patterns, plan to press Y at the very first moment the counter becomes available.
One of Each – 30 points
* Use every Freeflow Focus gadget in one combo.
Use all of the ff. in one combo during a combat brawl:
Concussion Detonator — LT+B
Glue Grenade — RT, RT
Batarang — LT
Batclaw Slam — LT+Y, X
Explosive Gel — LT+X
Arsenal, Awesome – 20 points
* Fully upgrade a weapon in multiplayer
Available in online multiplayer mode.
Legend – 50 points
* Earn a level of prestige in multiplayer
Available in online multiplayer mode
Know Thy Enemy – 25 points
* Defeat each of the enemy players at least once in a multiplayer match.
This counts towards the online players available at the lobby.
I Am The Night – 70 points
* Finish I Am The Night Mode. Available on New Game Plus
Refer to our I Am The Night Mode Guide
City of Assassins – 10 points
Identify each of Black Mask’s assassins.
Story-driven.
One eye open – 15 points
* Defeat Deathstroke.
Story-driven.
Nobody that matters — 10 points
* FInd out who is the Joker?
Story-driven.
Everyone wears masks – 15 points
* Find the Black Mask.
Story-driven.
One Rule – 25 points
* Save a life.
Story-driven.
Perhaps sooner, Perhaps later – 30 points
* Defeat the Joker.
Story-driven.
Shut Down – 10 points
* Shut down an entire Tower Network.
Check out the GCR Comms Tower Guide.
Counter-intelligence – 10 points
* Decipher one Extortion File.
Check out the Enigma Datapacks Guide.
Enigma Unravelled – 15 points
* Collect all Enigma items.
Check out the Enigma Datapacks Guide.
First Riddler Trophy – 30 points
* Collect every collectible.
Check out the collectibles guide for further details.
One down, several to go – 10 points
* Complete a Most Wanted entry.
Beat one of the optional Most Wanted bosses. This refers to Penguin, Deadshot, Shiva, Bird, and Black Mask. Follow the Most Wanted guides for more details.
The Innocent and the Predatory – 25 points
* Capture all of Black Mask’s Assassins.
Refer to the Most Wanted Guide.
Shadow Vigilante – 15 points
* Master the Shadow Vigilante Dark Knight track.
Refer to the Dark Knight challenges Guide.
Gotham Protector – 15 points
* Master the Gotham Protector Dark Knight track.
Refer to the Dark Knight challenges Guide.
Worst Nightmare – 15 pointa
* Master the Worst Nightmare Dark Knight track.
Refer to the Dark Knight challenges Guide.
World’s Greatest Detective – 15 points
* Master the World’s Greatest Detective Dark Knight track.
Refer to the Dark Knight challenges Guide.
Legend of the Dark Knight – 25 points
* Complete all Dark Knight challenges.
Refer to the Dark Knight challenges Guide.
Crime Scene Investigator – 10 points
* Complete all Casefiles
Personal Trainer – 10 points
* Obtain all the medals on Combat Training maps.
Perfectionist – 20 points
* Obtain all the medals on Custom maps in Challenge mode.
Refer to our Challenge Mode Guide.
I’ve Got This – 10 points
* Acquire all upgrades.
This counts all the upgrades available for the story mode campaign.
What hit me? – 15 points
* Take down 100 enemies who didn’t know you were there.
This means perfrom 100 Stealth takedowns.
Anyone see that? – 10 points
* Complete a predator encounter without ever being spotted.
Always take out the guards one by one. You have to isolate them so you will not get frustrated trying to deal with multiple guys especially the ones wielding firearms. Use the explosive gels on walls to provide misdirection, after the explosion quickly move to another area and ambush the incoming enemy as you prefer to. Use your jammer at the start and disarm as many enemies as you can first while being perched above, then focus on the other guys who still have dangerous firearms first. Also use the multiple batarangs for multiple knockdowns leading to multiple knockouts.
Silent Knight – 10 points
* Complete a predator encounter using only silent takedowns.
Use the explosive gels on walls to provide misdirection, after the explosion quickly move to another area and ambush the incoming enemy as you prefer to.
Around the World — 10 points
* Use the Batwing to travel to all Fast Travel points.
SImply look for the fast travel icon and choose it using A to access each one.
Air Marathon – 10 points
* Glide 26 miles total.
Just keep fying across Gotham during free froam.
Medalist – 40 points
* Obtain all medals on the original Ranked Maps in Challenge mode using Batman.
Refer to our Challenge Mode Guide
Olympian – 40 points
* Obtain all medals on the original Campaign maps in Challenge mode using Batman.
Refer to our Challenge Mode Guide
Voice of the People – 15 points
* Collect 20 Anarky Tags.
Follow the Anarky Tags guide
Clean Streets – 40 points
* Complete all Most Wanted missions.
Refer to the Most Wanted Guide.
Give Them Something to Believe – 50 points
* Complete New Game Plus.
Predator Paragon – 25 points
* Take down 6 different Elites in a match, using 6 different methods as Batman or Robin in multiplayer.
Available on online multiplayer mode.
Killing Joke – 15 points
* Reach max level with the Joker faction in multiplayer.
Available on online multiplayer mode.
Fallen Knight – 15 points
* Reach max level with the Bane faction in multiplayer.
Available on online multiplayer mode.
Gotham All-Star – 20 points
* Reach max overall level in multiplayer.
Available on online multiplayer mode.
Clutch – 15 points
* Kill a Hero to bring back your entire gang when at 0 reinforcements on a full multiplayer server.
Available on online multiplayer mode.
Tales of Gotham – 25 points
* Win a round of each map with each faction in multiplayer.
Available on online multiplayer mode.
I Like Those Odds – 25 points
* As a Hero, defeat 4 Elites within 40 seconds without using melee in multiplayer.
Available on online multiplayer mode.
Not An Ordinary Criminal – 15 points
* As an Elite, earn 4000 XP in a single multiplayer match.
Available on online multiplayer mode.