(2) Aggressive option: Getting inside the plant Deus Ex: HR Guide
Last update: 11 May 2016
Map legend: 1 - Main entrance to the plant; 2 - A road leading on the top of containers (to the air vent).
Lean out from a corner and quietly get rid of the first guard, preferably immediately, and not only when he will leave this place. I recommend using the option to kill enemies, activated with Q button by default (Jensen must be close to the attacked a person of course). The advantage of this is that the enemies have no chance to defend themselves against it. You do not need to waste your ammunition too, but it is required to regeneration a battery visible in the upper left corner. Same as with peaceful option, I would recommend not alerting other enemies. They would be easier to be killed this way. Think also about searching an opponent's corpse after each kill. This particular one will have with him a PDA with a saved message beside other things.
Carefully move closer to the main entrance to the plant. There are three enemies there and it would be good to start a fight with the detonation of one of the nearby explosive barrels (screen above). During the fight remember to take cover and do not let enemies get close to Jensen.
Make sure you've killed all enemies, search their corpses, and pick up ammo for a combat rifle from one of the crates and head towards the main entrance to the plant #1. Once inside #2, take a concussion grenade and save the game.
Reward: 200 experience points.