Resistance 2
39 Achievements
13-15h
Up Close and Personal
Get 50 melee kills with any weapon.
29.2%
How to unlock the Up Close and Personal achievement in Resistance 2 - Definitive Guide
But incase you're having difficulty racking up melee kills on enemies wielding weapons, then the chapter I got it on was chapter 3, Twin Falls. Idaho. As you make your way through this mission, mostly every enemy you come across during the first half of this chapter will be ones that pop out of egg like things and run at you, trying to melee you, making it easy for you to melee them, due to it being a 1hit and them not damaging you with any form of weapon.
You are able to get hurt by them, but not too much if you're careful, there's also a point in this mission where you're swarmed by 10-20 of them at once, which you can use the grenade launcher on your carbine for, aiming for the 150kills trophy.
You can use a melee attack by pressing the R3 button.
This trophy is pretty easy to get on this area, the preferable weapon to use melee with is the magnum because it pretty much has the least melee cooldown time of all the weapons and it doesn't switch to the knife and rifle butt animation like the other ones.
And pretty much Grimms, as of the whole game have the lowest tiered health next to the leapers. So it's pretty much basically a one hit kill on all of these grimms, except the fact that they don't hug your face. Cumulative towards the Exotic Weapons Collector trophy.
The description for the explosive expert trophy details the best spot to obtain this trophy.