Find the room containing robots hanging from the walls near the end of the game. Use one of the tables, and Bik will lie down for an augmentation.
Easy "Destroyer of Worlds" achievement
After distracting the hungry monster "Chompers", go left slightly and pick up the "LFG 9000" weapon on the ground.
Easy "Grenadier" achievement
While invading the alien ship with Ammut and Tatenen immediately after the "Firewall" mini-game, a force field will block your progress. Before deactivating it, throw your plasma grenade into it.
Easy "Heavy Equipment Operator" achievement
When controlling Bik on the Space Station, find the area with a Magnetic Lifter. Use the controls device to move the Magnetic Lifter to the Metal Container. Lift the Metal Container, place it over Bik, and drop it. Bik will die, but "Heavy Equipment Operator" will be earned.
Easy "Stick Up Artist" achievement
When Bik, Ammut, and Talandra arrives on a new planet, you will have to find parts to repair the transporter. As Ammut, walk into the tent "Tech Outlet" and use your Plasma Gun on the Merchant.
Easy "Cyborg" achievement...