This mission starts near a military base. You must consume the local commander. The problem is, guy is walking in a cloud of Bloodtox, the thing that kills Mercer and mutants with ease. If you get yourself a military disguise and quickly consume the guy, you should be able to walk out of the Bloodtox before you die. Once you absorb your enemy, go to the marker placed near the base entrance.
Now it should be quite easy. Enter the tank or helicopter (I strongly advise you to take that second option) and escort the Bloodtox vehicle to its destination. Hydra's tentacles will appear on your way, so it is important to drive/fly in front of the Bloodtox vehicle and quickly eliminate all of the threats.
Reward: 150000 EP, 2 new events available