The following chapter provides a description of all the activities that you should perform during the second level of the game, and follow the storyline of The Surge. You will find information on enemies and NPCs that you will come across, shortcuts and how to reach the boss and exit the location.
Unlock the first shortcut
Soon, you will realize that things have changed. Go straight to the Medical Station and speak with Sally. She will provide you with new information. Once you run out of dialogue options, go to the ventilation tower, located near the passage to the train station.
Once inside, keep moving up and defeat enemies that will block your way. At the end of the staircase, on the right, there will be an enemy with a flamethrower. On the left, there is an implant. This floor is full of enemies, so you will have to move carefully. If you go left , you will end up in a narrow corridor with some enemies that you will have to lure out. You won't go much further but you will find a new implant and audiolog.
On the right  there will be 4-5 opponents and if you choose this path, you will reach another part of the location. Before you use the stairs, go to the spot marked in the screenshot. Go through the fog, and just round the corner, you will find a spot to restore your health. Use it if you are low on health. There are some items at the lower level. You will also come across a circuit that can be overcharged. There are only few enemies here.
Overcharge the circuit, go downstairs and open the door. There are some boxes on the right. If you destroy them. You will be able to equip your drone with a new implant.
On the other side of the door, you will come across some enemies, a new implant, and another audiolog. Go forward, until you come across an enemy by closed door. There is a ramp, behind it, and you cleared it out during the previous stage. Defeat the opponent, open the door, and unlock a shortcut to the Medical Station.
The upper floor and the Boss fight
Get back to the place, where you can restore your medical supplies and use the stairs to reach the top. Eliminate some enemies, skip the floodlit entrance to the top and go to the spot presented in the screenshot. Pick the message and go back, because the door would take you to the security zone.
Upstairs, you will meet Irina, whom you previously provided with a Staff. Speak with her and move forward. Eliminate the enemy patrolling the area, and turn right. On the other side of the door, there are three opponents and a new Rig. In order to pick it up, you will have to break the cabinet. Now you can collect the item. Exit the room and use the stairs to reach the top.
On the top floor, there is an Exo-Lift  and a bridge  to the other side of the abyss. Cross it, break the lattice, and enter the technical corridor. Break another lattice and go down in the Exo-Lift. You will end up right next to the Medical Station.
Upgrade your Rig. Now you can activate up to 12 implants, however, in order to use its full potential, you will have to upgrade the Core to level 75. When you are ready, head to the Exo-Lift, which you skipped earlier, and reach the top. This will begin the boss fight.
Once you defeat the boss, go left (from the dilapidated platform perspective). Go through the technical corridors, and after some time, the floor will collapse and you will end up in a new location.