Here is the full list of all 12 M.E.R.C. Genesis achievements.
Reach title screen
Kill 100 Enemies
Kill 500 Enemies
Kill 1000 Enemies
Kill 2000 Enemies
Kill 5000 Enemies
Score 100 Headshots
Secure 10 Vaults
Secure 25 Vaults
Secure 50 Vaults
Secure 15 Archives
Secure 50 Archives