Resistance 2

This one is pretty much straightforward, like the word itself. Just kill enemies with the respective weapons. It’s great to have at least an extra 10 more kills on each weapon just in case. You can check your weapon kills on the stats screen, highlighting on the single player one and it’ll show you every possible stat available in the game, i think secondary fire counts as well, just do them(for the ones available) so they’ll count.

And also remember that to secondary ammo never replenishes by running over it with a used up same version of the weapon. Change the weapon you want secondary for and pick the fresh one up instead of running over it.

Carbine - This weapon can pretty much be found everywhere. A thing to remember about the carbine is that it doesn’t fill the secondary weapons ammo just like the bulleseye. To fill up the secondary ammo, you should replace it on your inventory with another weapon, and pick up a carbine that you haven’t ran over while your equipped with it.

Bullseye - Staple chimeran weaponry, pretty easy to find and not that rare, so when you find one, use until you get your Nowhere to hide trophy, use it as a key moment to stop killing. But i’m sure you’ll have more than one use for this weapon.

Bullseye MK 2- You can find this weapon on the Idaho diner area, when you first pick the marksman up, they are dropped by the more heavily armored hybrids. The more exact location is the gas station/diner area in Idaho.

Frag/Air Fuel/Spider/Hedge Hog - All of these grenades are available everywhere, although some of them aren’t available in other missions. Good way to gain kills for these are the anti air gun area on San Francisco(for all frag, air fuel and hedge hog grenades) and use spider grenades heavily on Louisiana and chixculub crater where there’s an abundance of them.

Bellock - Pretty much the same way you can get kills for the Pyromaniac trophy. The best place to farm this is on the stage in Idaho. After it’s been acquired outside the diner, make sure you kill enemies both with primary and secondary fire.

Marksman - You first get this gun before you enter the diner where the Bellock can be found. You can rinse/repeat this area for the kills needed for this weapon. An exploitable vehicle is available just beside you, use it to your advantage!

Auger MK 2 - This can be achieved in conjunction with the Auger trophies which you have(or will be obtaining) on the battleship mission in Idaho. Straightforward trophy the can be gotten with the I see you trophy.

V7 Splicer - This weapon is actually available in only one mission. Chicago starts off with you picking up an un-used splicer. Fire away as the grimms approach you, you can charge up R2 to melee some enemies and then fire the blade you’ve been charging. A better way to save up ammo and rack up kills for this trophy.

MP-47 Pulse cannon - The great thing about the pulse cannon is it is actually very useful after fighting the kraken the first time you see it in the San Francisco level. Save it up after you defeat it the first time(not using the secondary fire) and when you get out of the compound, unload on the enemies you see after the anti air gun part.

L.A.A.R.K - Pretty easy to get kills for this one after you get one in orick. When you first encounter the downed chimeran ship near where you need to do the Wrecking Machine trophy. Save it for later and kill all of the chimeras you see, die by exploding a vehicle nearby and rinse/repeat. Do both secondary and primary fire kills.

Also remember that the secondary of the L.A.A.R.K is homing, so it’s not going to be a hassle. Also, another spot where to use this is on the mansion on Louisiana. Before you fight marauder. There’s a L.A.A.R.K on the topmost floor. What will happen when you clear the whole house is that you get attacked my 2 ravagers, 2 Steelheads and at least 7 hybrids. You already know what to do.

Wraith - This one is good to get on the Bryce canyon mission in conjunction with the spitting lead trophy, just kill all of the leapers that come across you. After unlocking the spitting lead trophy, this weapon needs no more worry to even try to do.

Magnum - You can get kills for this on the place where i advised you those handful of trophies. Just keep doing it there, both direct hit from the ammo and indirect(trap hits) for this weapon. It’s available on a lot of missions so make use of it when you get it.