During the lab section of Rebirth Island, you will notice a few monkeys in cages. The idea is to kill 7 of them as fast as you can. Thankfully grenades count and there is a row of cages just near the end of the lab section that will allow you to get this easily. The video will show you where to go and what to do to become the bane of monkeys everywhere.
Once you break free of your chair at the menu screen, walk forward and then to the left twice. There you will find a computer terminal. Type in DOA and the game Dead Ops Arcade will load up giving you the easy prize.
Another achievement/trophy for completing a number of missions on the Veteran difficulty setting.
At the menu screen, where you are facing the television screen, quickly alternate hitting the left and right triggers and your arms will break free of the restraints. Once you get up, the achievement/trophy will pop.
During the last half of the mission Project Nova (making sure it is set on Veteran), you will need to set a charge and hop off the side of the ship you are in. When you set the charge a timer starts to count down and you need to skedaddle as quickly as you can. Before you set the charge, make sure you clear the room of all enemies so that you are free to set the charge without any interruptions. Once the charge is set, shoot the supporting beam and run to the exit as fast as you can. There will be a few enemies along the way, but don’t stop to kill them. Keep running and take them down and get to the rope atop the stairs before the timer hits 2:15.
Complete the Fifth mission, S.O.G., to obtain this.
While rocking out to “Sympathy for the Devil” over and over during the mission “Crash Site”, you will be given a few targets that are marked with a Destroy icon. Aside from taking those out, you’ll also need to destroy every building and structure along the riverbank, on both sides. Go slow and make sure to keep an eye out for the sneaky ones hiding in the back.
In the mission WMD, once you reach the bottom of the stairs after rappelling down the Cliffside, you’ll need to take out the enemies at the station undetected. Watch the video for a guided path.
Complete the tenth mission, Crash Site, to obtain this.