Prisoners of HYDRA

The Sea Warrior and The Spider Soldier have been instruments of H.Y.D.R.A. as long as they could remember. Literally. Their minds are wiped of memories because their past keeps surfacing from the buried parts of their minds.
Their lives are a never-ending routine of wake up, eat breakfast, get experimented on, take a few physical and mental tests, go on a mission and kill people, come home, take a cold shower, and go back to sleep.
Until the new recruits arrive. The two assassins can't fight the memories resurfacing, no matter how many memory wipings. But every time they try to escape, they're caught and punished severely. How can they escape their prison?