Prior to his infection by Alex Mercer, Heller was competent and skilled in battle as a result of his military training, as he was reported to have killed "hundreds" of infected before his own infection. He is proficient with the majority of military weapons, ranging from standard machine guns, rapid-fire Gatling guns, and rocket launchers.
Abilities
Viral Sonar:
Heller has the ability to send out a sonar sound which can be used to find targets he is looking for, it is similar to a bat's sonar, he sends out a sound and it returns when it hits an object.
http://www.youtube.com/watch?v=BmgU-VEs1QQ
http://www.youtube.com/watch?v=CEkNJwem9tQ
This can be used to find targets over large distances and evetually Heller can use this sonar vision to see if he is being watched by soldiers whilst disguised or not.
http://www.youtube.com/watch?v=KaJF67Y3DGE&feature=related
0:23 & 3:15
Claws
Can cut through human and infected bodies with ease.
http://www.youtube.com/watch?v=tQP3rCw1Sdw
http://www.youtube.com/watch?v=oENNaosGKck
Tendrils
The tendrils unleashed by Heller are capable of lifting and tearing apart cars and military vehicles, ensnaring powerful infected beasts, and even ripping large groups of enemies to shreds.
http://www.youtube.com/watch?v=OBagGCyg9JA
http://www.youtube.com/watch?v=PNjQ...;feature=fvwrel
http://www.youtube.com/watch?v=L_011-qUN5U
http://www.youtube.com/watch?v=eZoZwOV09mU
Blade
The blade is extremely effective in close combat, and although the area of effect is very localized, the blade's basic attacks dish out higher damage than those from any of the other powers. While this power may be utilized against basic infantry units, its' true destructive capability is maximized against vehicles and large infected creatures such as hunters.
http://www.youtube.com/watch?v=RwpKGu01Kmg
http://www.youtube.com/watch?v=lPq9MthJHCA
Whipfist
The Whipfist consists of an elongated appendage with a blade at the end. Given its unique status as a ranged attack, the Whipfist is the weapon of choice when opposed by the recurring Helicopters or distant enemies. The Whipfist can be used to attack many surrounding enemies cutting infected and non-infected with ease.
http://www.youtube.com/watch?v=8gI8MZefH3U
http://www.youtube.com/watch?v=PrbcZH4KX6M
http://www.youtube.com/watch?v=1YKjoXSXEMM
Hammerfist
The Hammerfists are the anti-vehicle ability. By shifting large amounts of biomass into his fists, Alex Mercer was able to create massive, hammer-like hands which with which to crush his enemies.
James Heller also acquired this ability Hammerfists after consuming the DNA of an infected. Heller was capable of performing performing devastator attacks and create groundspikes similar to Mercer's Claws.
http://www.youtube.com/watch?v=RJmrH7qrCt8
http://www.youtube.com/watch?v=O5rhqNMsdLQ
[url]Biobomb[/url]
Biobomb is an organic explosive, implanted under the skin of a victim by James Heller. After a brief period of time, tentacles force themselves from the infected subject, at a high velocity, similar to the tendril barrage devastator. These tendrils pull anything they touch, in towards their epicenter, this being the person originally implanted with the Biobomb.
http://www.youtube.com/watch?v=HJiugrVw7Sg
http://www.youtube.com/watch?v=IXzboYA8LOI
Shields
Able to protect Heller from all type off attacks can redirect missiles if he gets attacked from upclose the shields become sharp and edgy and release a counter attack:
http://www.youtube.com/watch?v=RJ2vhcU8QeA
http://www.youtube.com/watch?v=D_qB-uXTMVI
Devastator
Devastators are super attacks that Heller can initiate. It causes a massive area damage to his surroundings at the cost of using up a portion of their critical mass health to execute. These moves can also be used while in Disguise.
http://www.youtube.com/watch?v=-7uStgRrjKc
http://www.youtube.com/watch?v=N4nOP36ZACw
Pack Leader
Pack leader was one of the many abilities developed by James Heller after consuming the Evolved Dr.Archer . This ability allowed Heller to summon Brawler Hunters to fight by his side. These Brawlers seem more powerful than any standard Brawler.
http://www.youtube.com/watch?v=WGYiiE8FBJ0
http://www.youtube.com/watch?v=JwL2LprudCQ
http://www.youtube.com/watch?v=q5_I_y31rwA