Yeah, Dynasty Warriors Gundam 2 looks like it will take a good while to platinum, although it's probably not very hard.
Crushing on Uncharted can be difficult, but taking your time and not actually using the cover the correct way will be time-savers. There are a few hard spots, but I think the game isn't any harder than Hard once you get past like chapter 4.
I haven't won a single deathmatch in R2, although I was close a few times. Anyways, the Carbine and Bullseye are probably the two most used weapons by players in Competitive (damn cheap grenade launcher on Carbine annoys me at times). I, personally, think that Spec Ops is the easiest class to level to 30 in Coop, since the Medic EXP was nerfed down to normal levels, but that's just my opinion. Soldier is fun and probably just as quick, although Medics aren't quite what they used to be in regards to EXP.
Essay Pro