Simply buy all 9 of the Titan OS Voice Packs from the Black Market menu. Combined, all 9 voices cost 200,000 credits. It is required to purchase all 9 voices for this achievement as well as
I recommend trying to complete challenges. By completing challenges, you can earn credits as well as burn cards. If you want, you can sell the burn cards for more credits as well as make progress towardsNote: Make sure you DO NOT regenerate if you are going for the "All the Hardware" achievement. This will reset all unlocked weapon mods and attachments but WILL NOT reset your voice pack purchases. The voice pack purchases will carry over when you regenerate.