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New Game Plus mode
Successfully complete the game under the Normal or Hard difficulty setting.
This mode allows you to keep your previously earned gadgets and experience
points. Also, there will not be any counter icons on thugs, thugs will be more
difficult from the start, thugs will have different configurations, and Bosses
will be tougher.
Hidden messages
Find the coordinates X700.00, Y490.00 on the Cryptographic Sequencer to
intercept a radio frequency that contains the following repeating numbers: 9,
23, 9, 12, 12, 18, 5, 20, 21, 18, 14, 2, 1, 20, 13, 1, 14. The message is
decoded as "I WILL RETURN BATMAN".
Find the coordinates X500.00, Y900.00 on the Cryptographic Sequencer to
intercept a radio frequency that contains the following repeating numbers: 5,
15, 9, 7, 21, 18, 18, 14, 3, 5, 24, 15, 12, 7, 22, 3, 10, 5, 15, 9, 22, 3, 8,
25, 26, 15, 16, 25, 10, 15, 17, 25. The message is decoded as "YOU WILL PAY FOR
WHAT YOU HAVE DONE TO ME".
The last radio transmission contains the numbers: 3, 20, 26, 18, 26, 16, 24, 1,
11, 4, 24, 9, 3, 8, 5, 2, 12, 18, 6, 16, 7, 11, 3, 10, 17, 5, 13, 4, 21, 8. The
message is decoded as "FEAR WILL TEAR GOTHAM CITY TO SHREDS".
Harley Quinn pregnancy
Go to the manager's office inside the Steel Mill. On the floor, next to the
Harley Quinn costume, there is a positive pregnancy test.
Taunting
Rotate the Right Analog-stick clockwise repeatedly. Note: If you execute a
taunt before performing a glide kick as Batman or Robin, the view will change to
the enemy's perspective.
Easy Augmented Reality Challenge
One of the last four Augmented Reality Challenges appears to be difficult
because you are supposed to execute a U-turn during your dive bomb. This can be
done easier by using the grapple boost going past the first checkpoint, then
turning around while gliding. You can then glide through all the checkpoints
much easier.
Batman Returns reference
In various locations within Arkham City are large smiling cat-faced spheres.
This is the logo used by Max Shrek for his department store in the movie Batman
Returns.
Lost reference
Play the mission where you have to get the cure back from Joker. There is a
part where a video plays featuring the Joker ranting about the ending to the
show Lost.
Successfully complete the game under the Normal or Hard difficulty setting.
This mode allows you to keep your previously earned gadgets and experience
points. Also, there will not be any counter icons on thugs, thugs will be more
difficult from the start, thugs will have different configurations, and Bosses
will be tougher.
Hidden messages
Find the coordinates X700.00, Y490.00 on the Cryptographic Sequencer to
intercept a radio frequency that contains the following repeating numbers: 9,
23, 9, 12, 12, 18, 5, 20, 21, 18, 14, 2, 1, 20, 13, 1, 14. The message is
decoded as "I WILL RETURN BATMAN".
Find the coordinates X500.00, Y900.00 on the Cryptographic Sequencer to
intercept a radio frequency that contains the following repeating numbers: 5,
15, 9, 7, 21, 18, 18, 14, 3, 5, 24, 15, 12, 7, 22, 3, 10, 5, 15, 9, 22, 3, 8,
25, 26, 15, 16, 25, 10, 15, 17, 25. The message is decoded as "YOU WILL PAY FOR
WHAT YOU HAVE DONE TO ME".
The last radio transmission contains the numbers: 3, 20, 26, 18, 26, 16, 24, 1,
11, 4, 24, 9, 3, 8, 5, 2, 12, 18, 6, 16, 7, 11, 3, 10, 17, 5, 13, 4, 21, 8. The
message is decoded as "FEAR WILL TEAR GOTHAM CITY TO SHREDS".
Harley Quinn pregnancy
Go to the manager's office inside the Steel Mill. On the floor, next to the
Harley Quinn costume, there is a positive pregnancy test.
Taunting
Rotate the Right Analog-stick clockwise repeatedly. Note: If you execute a
taunt before performing a glide kick as Batman or Robin, the view will change to
the enemy's perspective.
Easy Augmented Reality Challenge
One of the last four Augmented Reality Challenges appears to be difficult
because you are supposed to execute a U-turn during your dive bomb. This can be
done easier by using the grapple boost going past the first checkpoint, then
turning around while gliding. You can then glide through all the checkpoints
much easier.
Batman Returns reference
In various locations within Arkham City are large smiling cat-faced spheres.
This is the logo used by Max Shrek for his department store in the movie Batman
Returns.
Lost reference
Play the mission where you have to get the cure back from Joker. There is a
part where a video plays featuring the Joker ranting about the ending to the
show Lost.