Investigate the steel mill - reaching the mill | Main storyline Batman: AO Guide
Last update: 11 May 2016
The first thing you need to do is, obviously, leaving the bank and you do not need to rack your brains too much because you may simply use the main, Northern exit on the ground floor. After you return to The Bowery turn your attention to the corrupt policemen staying around, among whom there are two enemies with guns, among others and a SWAT team member with a shield. You do not need to fight them, though, because you can leave this area by means of, e.g. fast-travel. If you still want to fight them, do not forget about using the disruptor to sabotage their weapons, and also to stomp on the shielded enemy.
The mill is in the Eastern part of the Industrial District and since the entrance is guarded by armed bandits, I recommend that you take appropriate precautions. I recommend that you approach from the West and glide towards the balcony shown in the above screenshot, where there is a single sniper staying. Get this one from behind and perform the quiet takedown.
The next one on the elimination list should be the single guard patrolling the top balcony, i.e. the one covered in snow and which is located under the vantage points (you can, by the way, use them to move around efficiently or to avoid taking damage if the alarm is raised).
Now, take to the two enemies patrolling the balconies below. You will find one of them near the sniper that you have just taken down, and the second one at the opposite side of the yard.
There should only be three more to eliminate, and they are patrolling the main yard. First of all, take to the single guard patrolling the area between the entrance and the gate. What is interesting, if you plan your attack well (the screenshot), you will be able to take down the guards, one after another, without raising the alarm. Make sure that you have secured the area and take the entrance on the lowest floor, which will take you to the Loading Bay.