If you want to make depth, and have the character unfold details... Heres what you could do.
-- The people making their perfect human for the good cause, shouldnt know about the super soldier division of them (this will turn into an "uncover a conspiracy" thing..
-- There should be an uprising of people with abnormal abilities trying to start a war.
-- One should be stunned/killed, recognized as diffrent beings by the military/police, and sent through an autopsy.
-- The autopsy team uncovers many abnormal things about the subjects mind, structure, and strength.
-- The good scientists should recognize the similarities between their project and the results published by the autopsy team (newspaper, whatever..)
-- The scientists begin to check around.
-- They get a sample of DNA from it and realize its almost exactly the same, yet its mind is detetermined to obey orders of war.
-- They begin to dig more into it, asking the government and the higher ups.
-- The facility becomes destroyed overnight the day after finding the name of a guy suspected to steal a sample.
------ Your mod starts the player here ------
-- You (whoever he is..) begin to search out the suspect (also whoever he is..)
-- You find out that a secret "whatever"(organization, government agency, ect) is creating these supersoldiers and is connected with the suspect after stalking him around.
-- They, in turn, find out your getting too close to knowing.. they set the supersoldiers with a priority to kill you.
-- You continue to dig, working your way through the secret "whatever's" bases/bunkers/facilities.
-- You isolate the facilities associated with creating them.
-- The evil people engineer a better, more deadly version of their supersoldier.
-- You kill their facilities, and research.
-- You find and kill the main guy (duh.)
- End -
Of course though, youd need to add more twists, plot points, and conspiracy type things.