Hidden Facility (Updated): Bruce Wayne Predator: Black Mask, Initiation DLC - Arkham Origins

After publishing the original video, I realized that there is an obvious route that was omitted and I thought I should update the vid to reflect that:
This is probably one of the most frustrating challenge I have done so far. Enemy AI behavior after the second takedown is the most inconsistent of any map I have played so far. The good news is that more than one equally fast route was discovered during the process.
1st Medal
Grapple over and drop the caltrops on the sniper and take him out for the first medal. I didnt exactly get on the platform as intended. The fastest way to get on the platform is to release from the grapple just before reaching the top.
Drop another set of caltrops on top of the far ladder to eliminate the jammer guy. They need to be just a little inside such that when he trips over half his body is over the edge. Then he will slip back down and get knocked out. Even with the right placement, it doesnt always work. On the other hand, with luck, a group of enemies will come very close to each other and 2 to 3 of them can be knocked out.
After that a guy should be coming up on the ladder behind you and u can easily zip kick him back down.
2nd medal
Quickly grapple back up to the first vantage point and pounce the next guy coming up the ladder. He will usually come if the first 2 takedowns are done quickly.
Drop some more caltrops on top of the outside ladder which could eliminate another guy as he climbs up. By now, the jammer guy should be eliminated and u could use detective vision.
3rd medal
Let the next guy coming up spot u and run towards u before disappearing with a kujiki bomb for a safe corner takedown.
You can eliminate the remaining guys as they come up to the platform. Easily zip kick the unarmored guys back down. You can ultra stun armored guys back the far end of the platform to quickly get rid of them. You can also quickly get rid of armored guys with a kujiki bomb and ledge pull down.
Var 1
In many instances, a guy will not climb up the ladder for you to pounce. However, its also very often that a guy will run by the boxes below you and you can pounce him instead and take the fight downstairs. Sometimes he may not run by the boxes and stop on the stair platform and you may have to grapple around to pounce him.
Everyone will be alerted to your position and you may want to use a Kujiki bomb to protect yourself while u use the boxes to score the corner takedown medal.
Immediately use another Kujiki bomb and wait for the armored guys to get to the grates. Hopefully, your caltrops should have gotten rid of the Jammer guy, allowing you to see. If not, you just need to take him out at the grates as well.
Beware of any remaining thermal guys who can shoot you through the smoke.
Var 2
Sometimes guys may not walk in front of you at all and you will have to grapple to the back to pounce a guy for the 2nd medal.
Kujiki bomb to the corner and take out another guy to score the last medal and immediately jump over to the grates and drop another kujiki bomb to lure the rest of the group to the grates before dropping the smoke.
This is an extremely aggressive approach as you will be surrounded and take a lot of gunfire. I did not survive a lot of attempts.
Var 3
Sometimes, a guy may just stay behind in the left side alone where you can safely pounce him for the second medal and wait for the other guys to come.
There is also a convenient corner here for you to score your last medal. If the guys dont run by your corner, you can always get their attention, Kujiki bomb disappear and grab from behind as the guys run past the corner. A grab and release on a armored guy also counts as a medal.
You can then immediately drop the smoke pellet and use the grates to finish off the rest of the group.
Var 4
The most aggressive approach is to pounce a guy who comes near the ladder and not climb up. Shuriken the nearby extinguisher for protection before you knockout the guy you pounced. The smoke should give you time to take out another guy. Then Kujiki bomb and go to the nearby corner to score the last medal.
Take care of the remaining guys using the smoke pellet in the grates like before. Redirect whoever is not close enough.
Starting Variation
You can also start off with an easy corner takedown and then ledge pulldown the sniper before grappling on the vantage point for the pounce medal. You can then easily drop caltrops in the smoke to score the last medal.
Sometimes, the guy's starting position may be too away from the boxes and may not move to close enough for your corner takedown.
If you decide to take the fight to the top, this approach leaves you no time to precision drop caltrops to knockout enemies. Enemies will surround you very fast. remember to use your Kujiki bombs and smoke to handle the crowd.

[@JordanJazey]

Bill A thanks for showing the last route because that chickzc was talking about because I just got 1st place on xbl ,and my time was 38s on this map.

[@cHickzc]

That last path you showed is the start of my 36s route. Lol. Idk if it's worth posting now

[@cHickzc]

Not only is the path obvious, but also it's unreliable. Although I tweaked it a little for speed purposes, guards hardly move to good positions near grates for takedowns. However, when it works, it's darn fast. :)