Transformers: War for Cybertron

This achievment can be earnt in about 15 seconds easily from start to finish, without needing boosting partners, without having to search for EMP grenades, and without having to do it in multiplayer.

The only requisite is that you have finished the Decipticon campaign up to the last mission.

Select easy, and load up Chapter IV - The Death of Hope, Checkpoint - Terminal Ambush.

Select Soundwave as your character. He has the leader vehicle with ram, despite being the scientist class.

As soon as the checkpoint loads, walk 10 steps down the steps. Right in front of you is a set of 3 EMP grenades.

Turn right, there is a door 10 steps ahead of you. Open it.

Inside are lots of cloakers.

As the Ram is not a one shot kill always, shoot the barrel right in front of you. This will damage the cloakers, but not kill them. Toss your EMP grenade to roughly where the barrel was and you will see 3-4 cloakers stunned (and at low health 5meters ahead).

*Please note, so that the AI will not charge into the room and start killing things, shoot the barrel as soon as the door opens, then toss the emp grenade as soon as you stop firing. This way you will have everything done before your team-mates join the battle. - Thanks to McDurbin for that.

Hit transform (LS), press boost (LT) and then tap ram (RB).

Achievment done, in a grand total of 15 seconds.

Please vote positive if you like, my first solution on here!

If you want to boost this achievement load up a private multiplayer game. Invite a friend, one of you has to select a scout and the other a leader. Meet up somewhere and weaken the scout to a low health. Back the leader up far enough away that he wont get hit by the emp nade. Use the scout to emp grenade himself then stand still and let the leader ram into him. Switch roles and repeat and you both get the achieve.

To earn this achievement the Ram-kill is done when boosting as a truck and hitting RB to do a dash forward in the direction you're driving. Simply toss an EMP grenade at an enemy and while he's floating stunned press RS to switch to vehicle mode LT to dash and RB to Ram-kill the enemy will blow up awarding you an achievement. Use Soundwave for he has the Ram ability.

I was first able to get this achievement on the 3rd decepticon mission. (you'll want to choose Soundwave as your character because he is a truck)

About 10-20 minutes into the mission (or sooner) you'll come across your first autobot snipers for this mission. There is an elevated bridge in this area with some regular autobots beneath it and if you've scavanged for weapons up to this point you should have EMP grenades (just check behind corners for grenade crates and such, it's still way early in the mission).

Simply line yourself up with the autobots beneath the bridge at a good distance away, throw the grenade, transforms into the truck, boost with the left trigger and ram with the right bumper.

It should kill him, but if it doesnt, the entrance to the room your in is your last checkpoint so you can revert to that if you miss and run out of grenades. (do it on easy for the least effort, and if your on easy you can pretty much ignore the snipers and just run under the bridge before your team mates kill everything.)

Hope this helps!