Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding is recommended. With a text editor, edit the "DefaultGame.ini" file in the "\Program Files\SEGA\Alpha Protocol\APGame\Config" directory. You can edit the perk unlock requirements to get their bonuses easily. For example, find the following lines:
APGame.APRPG_AbilityManager; Accessed with Perk enumerations. PerkAcquisitionRequiredCount=25 ;Demolitions Expert - Kill this many enemies with Explosive Grenades.
If you want to earn it for the first person you kill with a grenade, make the following change: