There is an easy way to do this WITHOUT getting any upgrades, and thus not forcing you to lose out on the Factory Zero trophy, or reload a save.
First and foremost, when you get to the holding cells (big, circular 3 level room with the security tower in the center) look at the northeast corner: there is a big crate over a vent. This is where you need to get to in order to obtain this trophy, and what I am going to describe is how to set this up so when Burke releases the gas you can easily get to this room without any trouble whatsoever.STEP 1
: Take out the 3 guards on the ground level, and the one dude in the security room. Easy enough - just use all takedowns. There are plenty of energy bars and packs all over the place prior to this area, so if you have to use them.STEP 2
: Find the big crate as referenced above. You should notice the vent behind it. If you are going for Factory Zero, you will notice this thing is impossible to move without your strength upgrade, but that is ok. You have some explosive barrels (red with the explosive icon) on this ground level. Pick one up, and hurl it at the crate (R1). The crate is no longer an obstacle. STEP 3
: Locate 2 cardboard boxes and 1 fire extinguisher. Take these items through the vent, and orient the boxes in a way to get you to the grate above the pipe in the small room. There is another vent that will take you into another area: bring your fire extinguisher into THAT room. STEP 4
: Proceed with the game.
After you confront the scientist (Kavanagh) and get her to supply evidence to Interpol, you proceed back to the holding cell area and are instructed to go beneath the security tower. If you follow the game, a timer will start and you will have to backtrack to the area you made ready for this trophy...
You could just go to where you set up everything. You should see something lit up green in the room you left the fire extinguisher. Pick up the fire extinguisher, and hurl it at the green display thingy: it will blow up, a hacker will speak and the trophy will pop.
And you did it without using any praxis kits!
Questions, corrections and neg vote justifications below.