Mafia II
67 Achievements
1,500
51-63h
Arctic Grave
Push the chief witness into the ice lake in "Joe's Adventures."
20
How to unlock the Arctic Grave achievement in Mafia II - Definitive Guide
The easiest way I found to obtain the achievement is to bump into his car making him stop (placing my car in front of his), take him out of the car and then just push him into the water with the melee (B) attack. The guy do not fight back neither runs away so it is extremely easy to do.
As DJ RJester wrote "you have you to push him from the front and NOT the back. Pushing from the back is an instant kill, if he tries to run then pull your gun out and put away again when he's standing still"
Hit his car on the back side so he spins sideways. With his car sideways on your front bumper drive him into the water. Note: your car goes very slow while pushing his car sideways. This might take a few tries so reload checkpoint if you get past the ice part.
I was chasing the car but I crashed in to a tree and my engine broke, so I restarted from last checkpoint
After the loading screen, The achievement just popped out of nowhere
Complete the first story mission "Witness - Frozen Memories" and eliminate the key witness. During the car chase, you'll drive over a frozen lake with many stretches of open water that you'll zig zag through. Use your car to force the witness' car into the water, while avoiding following him in. You'll get the Arctic Grave trophy immediately upon sending the witness into the water and the What Witness? trophy at the end of the mission. Note that some have reported that forcing the witness' car into the water did not cause the trophy to pop for them. I didn't have this trouble but you can also try forcing the witness' car to stop by getting in front of him, pulling him out and pushing him into the water while on foot.
Hit his car on the back side so he spins sideways. With his car sideways on your front bumper drive him into the water. Note: your car goes very slow while pushing his car sideways. This might take a few tries so reload checkpoint if you get past the ice part.
If you fall into the water with the cars it don't matter you just have to run on foot to the end the mission.
The 2nd essence of the second option is to quickly drive around the witness along the dam and go to meet him, because the witness travels along a scripted route, you can catch him and, according to the 1st option, we cut him off and drown him.
PS!!! Be extremely careful when pushing out as It is also used for silent killing, which is what happened to me the first time. This is immediately followed by saving, and not only will you have to cut in a cafe, but you will also have to start the entire mission from the beginning.