Enhancements can only be added by doctors. They cost $2, 000 to install. They raise one of your stats by 2x each training session(pl, hp, end or spd). Can only get two installed in your body, androids can not get these installed. Androids and cyborgs can however get a bomb placed in them for a last resort. You can only use it when you have 500 or less hp in a battle. It deals the amount of hp you started with and deals that much damage to your opponent killing you in the process, but the up side is if it kills your opponent you get stats for winning. costs the same as the other enhancements.