Lost Planet 3

Story related, cannot be missed. MISSABLE COLLECTABLE WARNING.

You will receive intel from NEVEC that a huge Akrid has been spotted in the area you are designated to and that you will receive a bounty if you kill it. As soon as this Akrid appears after it is introduced following you repairing the damaged machinery in an ice plain, use your DNA tagger bullets on your pistol to collect the DNA for this Akrid. This is the only time this Akrid ever appears and so if you do not collect its DNA here, then you will have to restart the Geneticist trophy all over again on a whole new playthrough. After you have definitely got the DNA for the Gorevorgg, you can proceed to kill it. In appearance, this Akrid is an enlarged Vorgg, but in physiology it is different as its weak spot is on its underside rather than on top of its body. Keep throwing grenades under the Gorevorgg when its stationary to inflict maximum damage to its weak spot. You can also shoot its underside with a gun although it can be awkward sometimes to get an aim on it, it is easy to get an aim on its underside from behind. To get an aim on its underside you should dodge one of its charge attacks and immediately start firing at it, this Akrid is slightly less armored at the rear. Upon killing it, you will earn this trophy.