The field transforms it into something new - an Organic Gravity Gun. In the confiscation field, all your weapons except the Gravity Gun will be destroyed. You need to get into one of the pods on the far side, as the nearer pods go into a matter disintegration beam which kills you. Go straight ahead to the end and slightly to your left in front of you are two lines of transport pods opening and closing. Go straight ahead through the metal beams to the end of the path and drop to the floor below. Find your way between the walls while following the general route of the pods by following the path left, right, left to the wall, right across the metal and onto the next path, left, left, right, to the end and drop to the next floor. Follow the passage to a chamber with transport pods moving along a rail to the left above you. Go forward through several doorways while avoiding the moving parts of the Citadel and drop down at the end to a thin passageway. Jump to the floor to your right and go left up the slope into the Citadel.

Go to the end of this ledge, drop onto the pipe to your right and jump onto the moving platform when it's up as high as it goes. Jump across to the left and onto the next ledge. Follow the rock ledges down until you reach a slanted rock, jump across and use this rock to slide to the ledge below. Turn to your left and drop to the rock below. There's a big chasm ahead, so you need to take another route. Head down the tunnel to the end and pick up the medkits.

Highway 17 half life 2