In order to start this mission, you have to get to location [773, 1364], specifically to the shiny circle on the ground.
New objective: Go to the coordinates of dr. Gutierrez's last location
Your target is location [850, 1212]. You have to get to the new shiny circle located on the building's rooftop. Watch the cut-scene with a bio-bomber who can create bio bombs and detonate them.
New objective: Hunt the bio-bomber
New hunt awaits you, so it is worth to get to the rooftop of one of the highest buildings in the area, because when you send an impulse being up there, you'll be able to easily locate the person you're looking for (screen above).
An approximate location of bio-bomber is [810, 1175]. Approach this person and consume it (B button and Y button). If bio-bomber is observed by someone, you can take off your disguise, because anyway you'll have to join the fight.
New objective: Defeat the bio-bomber to discover Archer's location
I recommend starting the duel with bio-bomber with the Devastator attack. I suggest using this attack also later on, because there are many civilians in the area, which can be used to obtain some bio-mass.
As for standard attacks, you can use any Heller's abilities to inflict damage to the boss. Wait also for occasions to perform special attacks (X, Y or B button) and dodge more often than usual. It is very important not to be grabbed by the bio-bomber, because then he can use his bio-bomb on Heller and inflict large damage.
New objective: Defeat the bio-bomber before he can escape
After losing about 2/3 of his energy bar, bio-bomber will start to flee. Take a look at the bar visible in right upper screen corner. If it gets empty, you'll fail the mission. Use sprint, long jumps and other acrobatic moves, to stay closed to bio-bomber. The chase should not take long fortunately and after getting to the rooftop of one of the buildings the fight will continue.
New objective: Consume the bio-bomber to discover Archer's location
Keep fighting until bio-bomber's energy bar is almost empty. Then run toward the boss and press B button to consume him. Notice that you're rewarded with ability named Bio-Bomb. It is worth noting that you'll be able to test it in a few minutes.
Luring out Dr. Archer's contact
New objective: Go to base Adams to look for Archer's contact
New objective: Hunt Archer's contact
Head towards the base in location [901, 1386]. Specifically you have to reach the shiny circle on one of the buildings adjacent to the base. Stand in the circle and according to the game's suggestions, press left analog to use the sonar.
New objective: Lure out Archer's contact with a bio-bomb
Make sure that you're masked as a scientist or a soldier and glide towards the base visible in the distance. Approach the commander indicated by the game, who stands in location [870, 1421]. Grab him (B button) and use the bio-bomb on him (X button). Wait for an impressive bomb detonation and a new cut-scene.
Defeating Dr. Archer's contact
New objective: Defeat Archer's contact to find out what he knows about Archer
During this fight I definitely recommend testing the offensive attack with bio-bomb (this is also a requirement to complete the bonus objective). After the fight starts, grab any standard soldier (B button) and use a bio-bomb on him (X button).
After "applying" a bio-bomb to soldier grab him again. Now target the boss (left trigger) and quickly throw a soldier at the boss (B button). If you've done everything according to the plan, a thrown soldier should hit the boss, exploding and dealing him serious damage.
After completing the bonus objective you'll be totally free in your actions. Personally I recommend "arming" standard soldiers in bio-bombs and throwing them at Dr. Archer's contact, so he will lose his energy fast. But you can as well perform standard attacks or use the rocket launcher.
Another interesting option is to use the Devastator attacks, especially that thanks to soldier running around the area, you can easily regenerate bio-mass bar. Watch out for guns mounted on base's rooftops. Theoretically you can ignore them, but if you do not want to heal yourself too often, you might destroy them and the best way to do it is to attack them with hammerfists (hold X button).
New objective: Consume Archer's contact to find out what he knows about Archer
Keep fighting until your opponent's energy bar is almost empty. Ignore other enemies, quickly run to the boss and press B button to consume him.
Hunting Dr. Gutierrez
New objective: Hunt dr. Gutierrez
Same as with the previous hunt, you might get to the rooftop of one of the highest building in the area, because when you send an impulse being there, you'll locate Dr. Gutierrez easily (Screen above).
The scientist you're looking for is standing next to the entrance to the large building in the south-eastern part of the green zone and his location is [960, 1495]. Approach Gutierrez in order to watch the cut-scene and start the fight with him.
Defeating Dr. Gutierrez
New objective: Defeat dr. Gutierrez to discover Archer's location
The fight with Gutierrez has same rules as previous duel. So I recommend creating "living bio grenades" and throwing them at the boss. As for reminder, you have to grab any civilian or soldier (B button), "send" him a bio-bomb (X button) and throw him at Gutierrez (B button).
If you do not want to waste time on creating bio-bombs, you can consume civilians in order to use the Devastator attack as often as possible, or perform standard attacks, using one of Heller's abilities. As for dodging boss's attacks I suggest jumping aside and not over him, because he reacts very quickly for such situations.
New objective: Consume dr. Gutierrez to discover Archer's location
Keep fighting until boss's energy bar is almost empty and after receiving the last mission objective quickly run towards him to consume him. If there are no more enemies in the area, the mission will end now (otherwise you'll have to lose the chase). The game will also unlock the next main mission - Alpha Wolf.