Now that you have completed the story levels once, let's open up the entire map. You will notice that the map is heavily shaded at first. We can open this up by flying to the red beams of light and using the terminals there. Some of the terminals have a gold lock, so require Superman (Heat Vision) or Cyborg (Laser Eye), whilst others will need to be built by The Flash. As such, I suggest flying around with Superman, using The Flash as your second player.
Once you have done all of these, the entire map will be uncovered. You can scan the map to find various things. Red dots are Red Bricks. Yellow dots are Gold Bricks. Purple dots are Citizens in Peril. You will also be able to find Gold Arches, Vehicles, and Bosses. We will start with the Bosses, as all of these are available from the start. All you require is Superman and Robin's Hazard Suit. You may also wish to first get the two Red Bricks that will increase your multiplier (x2 and x4). These, unlike most of the others, do not require any extra characters. Please see the next page for a list of all Red Bricks.
Each terminal will have revealed a different Boss (villain).
Some of these Bosses have an achievement directly attached to them, so let's do them first. If you miss out on them here, you can do them at any time after unlocking the Bosses by switching the second player to your desired opponent.
Sinestro (125,000 studs) - Defeat as normal. Defeat as Green Lantern for the "Green Lantern's Light" achievement.
Brainiac (500,000 studs) - Defeat as Superman. Now switch to Brainiac, and find some LexBots. They can be found in various places across Gotham City. I found them around the fountain situated north of Wayne Tower. Just defeat one for the "Inferior Machines" achievement.
General Zod (500,000 studs) - Defeat as normal. Defeat as Superman for the "Kal-El Last Son of Krypton" achievement.
The remaining Bosses are as follows. Note that some require certain suits/characters, but all of these will be available upon completion of the story.
Harley Quinn (125,000 studs) - Use Batarangs when she is stationary.
Scarecrow (125,000 studs) - Break objects around tent to stop gas-made illusion, then defeat as normal.
Mad Hatter (100,000 studs) - Defeat his cronies to get him to appear.
Lex Luthor (250,000 studs) - When he is attacking one player, switch to the other and defeat as normal.
Ra's Al Ghul (100,000 studs) - Defeat as normal.
Poison Ivy (125,000 studs) - Requires Robin's Hazard Suit (nearby) or Aquaman to clear chemicals to enter the Botanical Gardens. Follow her around the Botanical Gardens, and then defeat as normal.
Captain Boomerang (100,000 studs) - Use Batarangs when he is stationary.
Bane (125,000 studs) - Defeat as normal.
The Joker (250,000 studs) - When he is attacking one player, switch to the other and defeat as normal.
Killer Croc (125,000 studs) - Requires to Robin's Hazard Suit (above) or Aquaman to clear chemicals. Defeat as normal.
Killer Moth (100,000 studs) - Use nearby lever to turn off light. Defeat as normal.
The Penguin (500,000 studs) - Defeat his penguin cronies to get him to appear, then defeat as normal.
Two-Face (125,000 studs) - Defeat his cronies to get him to appear, then defeat as normal.
Hush (100,000 studs) - Defeat as normal.
Catwoman (125,000 studs) - Defeat as normal.
The Riddler (125,000 studs) - Defeat his cronies to get him to appear, then defeat as normal.
Man-Bat (500,000 studs) - Requires Superman (Heat Vision) or Cyborg (Laser Eye) to break bell at top of bell tower. Defeat as normal.
Clayface (100,000 studs) - Defeat as normal.
Mister Freeze (500,000 studs) - Defeat his cronies to get him to appear, then defeat as normal.
Once you have defeated and purchased all of the above Bosses, you will earn the "Super-Villain" achievement. If you are short on money, I recommend searching out some of the multiplier Red Bricks (x2 and x4 require no extra characters), turn them on via the Extras menu, and then replay Level 13, Core Instability. This can be done by going to the Bat Cave and using the central terminal. Select Level 13 on the Gotham City Map.
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