There are a total of eight militia roadblocks located on Founders’ Island and they can be found in the following locations:

Roadblock 01:

Map co-ordinates: (2042, 1632)

Description: Just east of the Stagg Airship Alpha (the southern air ship) marker on the world map.

This roadblock is one of the trickier ones on Founders’ Island as it requires a modicum of sneakiness. There are vents leading into the roadblock from the north and the south. These lead to an extensive series of tunnels running beneath the roadblock area.

From these tunnels you’ll be able to see the enemies guarding the area. There is a Sentry Drone and nine armed Soldiers. Before making any kind of move, we will want to use the Remote Hacking Device on the Sentry Drone to temporarily blind it. You can then either try to track and take down the guard with the pulsing beacon silently before anyone else notices, or use a Fear Multi-Takedown and hit and run tactics using the vents to defeat the enemies in the area.

Either way you choose to go, make sure that the Sentry Drone is always blinded before doing anything in the area!

Once you are able, inspect the pulsating body with Detective Mode active for a button prompt to destroy the communicator.

Roadblock 02:

Map co-ordinates: (2684, 1878)

Description: At the end of Penitence Bridge.

This roadblock is quite small, but also quite heavily populated. The defences inside include nine Soldiers and a Brute. There are also a set of mines on a small balcony area above the roadblock and this tells us that the Batmobile can reach this location.

Move up the street slightly from the roadblock and find the stairs leading to the balcony. Here we can easily use the Batmobile to target and blow up the mines and then move into a position above where we can take out all of the enemies.

Once they are all knocked out, inspect the pulsating body with Detective mode active for a button prompt to destroy the communicator.

Roadblock 03:

Map co-ordinates: (2538, 1773)

Description: On the corner to the southeast of the Arkham Knight HQ marker on the world map.

This is by far the easiest roadblock to be found on Founders’ island. This roadblock‘s inhabitants include a grand total of five armed Soldiers. If you can pull off a Fear Multi-Takedown to lead off the fight, you’ll make it even easier. It is possible with an upgraded Fear Multi-Takedown to eliminate the entire group of enemies without them even throwing a punch at you!

Once they are all knocked out, inspect the pulsating body with Detective mode active for a button prompt to destroy the communicator.

Roadblock 04:

Map co-ordinates: (2519, 1457)

Description: A large courtyard in the middle of Otisburg.

This is a roadblock that you DO NOT want to attempt on foot. It covers a fairly large courtyard area between a series of buildings and its defences include six Sentry Drones and three armed Soldiers. Fortunately there is a super-easy way to take out this installation.

If you can approach from north and bang on your Detective Mode, it is possible to find a panel on one of the walls that we can use the Remote Hacking Device on. Doing so will open a large shutter door that the cables lead to which will allow you to bring the Batmobile into the main roadblock area and you can use it to eliminate everything in a much quicker fashion.

Once everything is out of commission, inspect the pulsating body with Detective mode active for a button prompt to destroy the communicator.

Roadblock 05:

Map co-ordinates: (2260, 2019)

Description: Along the water just to the south east of the Perdition Bridge leading to Bleake Island.

As with many of the other smaller-sized roadblocks you’ll encounter, this roadblock basically consists of a group of enemies that we’ll need to subdue. The forces guarding the roadblock include seven soldiers (two with guns, two with melee weapons) and a Brute. It’s a good idea to prepare for the fight by using the Disruptor to disable the enemy firearms and if you can lead in with a Fear Multi-Takedown and use it to eliminate 3-5 enemies as soon as you begin, it will be much easier to deal with.

Once they are all knocked out, inspect the pulsating body with Detective mode active for a button prompt to destroy the communicator.

Roadblock 06:

Map co-ordinates: (2270, 1851)

Description: I n a building beneath the streets just below the end of the Perdition Bridge leading to Bleake Island.

The roadblock at the above co-ordinates looks difficult on first sighting due to the four rotating Sentry Turrets and the six armed soldiers walking about within. Fortunately, the Batmobile gets itself a sweet invite to this roadblock. You can find an anchor point that we can grab with the Power Winch in the north west corner of the compound to pull down a wall.

Once the wall is down, you can proceed inside with the Batmobile to easily neutralise the occupying hostiles.

Once they are all knocked out, inspect the pulsating body with Detective mode active for a button prompt to destroy the communicator.

Roadblock 07:

Map co-ordinates: (2128, 1802)

Description: Just to the west of the Perdition Bridge leading to Bleake Island.

This is another small enclosure fight that requires us to take down the enemies inside the barricade. This roadblock‘s inhabitants include four Soldiers (two with guns, two with stun sticks) and four Combat Experts. It’s a good idea to use the Disruptor to disable the enemy firearms beforehand and try to initiate the fight with a Fear Multi-Takedown and use it to eliminate 3-5 enemies (with as many being Combat Experts as possible) from the get go, the remaining enemies will not pose as great a threat.

Once they are all knocked out, inspect the pulsating body with Detective mode active for a button prompt to destroy the communicator.

Roadblock 08:

Map co-ordinates: (2863, 1861)

Description: Along the water just to the south of Penitence Bridge leading to Miagani Island.

Small enclosure + fight. All armed 5 Soldiers. Single upgraded multi-takedown. 5 Soldiers, 2 Guns, 2 Stun Sticks.

This is another of the small enclosure type roadblock areas that is guarded by a small group of enemies. This roadblock‘s inhabitants include five Soldiers (two with guns, two with stun sticks). It is possible with the fully upgraded Fear Multi-Takedown to eliminate the entire group of enemies from the very start of the fight, without them even throwing a punch or taking a shot at you!

Once they are all knocked out, inspect the pulsating body with Detective mode active for a button prompt to destroy the communicator.

For clearing all 20 militia checkpoints you’ll earn the achievement/trophy ‘Streets of Gotham’ .