Deus Ex Human Revolution: Aggressive solution Reaching the staircase
Your next task is reaching the only staircase leading onto level 1. There you can find the room pointed by Pritach as Eliza Cassan's whereabouts.

Map legend: 1 - South room entrance; 2 - Stairs leading onto the upper level.
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If you want to quickly reach the objective, you should choose the corridor leading south #1. Carefully open the door (Operating Area 3) and shoot the enemies visible inside. After the primary attack I'd suggest to back out a bit #2, placing yourself behind the wall and ready to attack the incoming enemies. Throughout the fights, especially look out for the so called Spirits, as they can use camouflage as well. Make use of the radar indications and the Smart Vision augmentation.
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Now you could go through the cleared room and reach the mission objective, but I'd recommend going back to the starting point and choosing the north stairs leading onto level 3 #1. Stay careful, as the area might be patrolled by a second enemy robot #2 which you of course have to destroy.

Map legend: 1 - Camera control terminals; 2 - Armory; 3 - Stairs leading onto the lower level.
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After reaching the new corridor on level 3 head forward, but after reaching the corner choose the first door on the right, the one leading to the armory #1. Here approach the door of the depot on the left and interact with the electronic lock #2. He has a level 4 security, but you can use the combination 1980.
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After disarming the lock enter the armory, in which you will find lots of weapons, ammunition and a weapon upgrade #1. Now you can return downstairs or continue exploring level 3. The latter option is better, as it will let you clean the upper balconies from enemy forces #2. You will have to look out for enemies with camouflage here as well. After finishing them off, head to the stairs leading onto level 2, dealing with any survivors.

Regardless of the previously chosen methods, your goal is to reach the door located in the south-west corner of level 2, leading to the new staircase (screen above).
Notice! The description of further actions can be found in Step 8 (Reaching the sub-basement).
- Deus Ex: Human Revolution Game Guide
- Deus Ex Human Revolution: Game Guide
- Deus Ex Human Revolution: Canada
- Deus Ex Human Revolution: Confronting Eliza Cassan
- Deus Ex Human Revolution: Introduction Confronting Eliza Cassan
- Deus Ex Human Revolution: Reaching room 404
- Deus Ex Human Revolution: Peaceful solution Getting out of the ambush
- Deus Ex Human Revolution: Aggressive solution Getting out of the ambush
- Deus Ex Human Revolution: Peaceful solution Reaching the staircase at the back of the studio
- Deus Ex Human Revolution: Aggressive solution Reaching the staircase at the back of the studio
- Deus Ex Human Revolution: Peaceful solution Reaching the funicular
- Deus Ex Human Revolution: Aggressive solution Reaching the funicular
- Deus Ex Human Revolution: Peaceful solution Summoning the funicular
- Deus Ex Human Revolution: Aggressive solution Summoning the funicular
- Deus Ex Human Revolution: Peaceful solution Reaching the main area of the basement
- Deus Ex Human Revolution: Aggressive solution Reaching the main area of the basement
- Deus Ex Human Revolution: Peaceful solution Reaching the staircase
- Deus Ex Human Revolution: Aggressive solution Reaching the staircase
- Deus Ex Human Revolution: Reaching the sub-basement
- Deus Ex Human Revolution: Peaceful solution Reaching room 802-11
- Deus Ex Human Revolution: Aggressive solution Reaching room 802-11
- Deus Ex Human Revolution: Defeating Yelena Fedorova
- Deus Ex Human Revolution: Reaching the helipad
- Deus Ex Human Revolution: Confronting Eliza Cassan
- Deus Ex Human Revolution: Canada
- Deus Ex Human Revolution: Game Guide
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