Got to 44 and finished all challenges for the carbine. (I've been done the shotgun reqs for gen 2)

I'm gonna use a new gun for the rest of this gen to get more exp, car or lmg?

car or dmr imo

No extensive use with either of them, but I was using Hemlock the other day. It's really nice. Once you get Starburst, one burst in the chest kills.

Right now the car class is made, but I will give the DMR a shot.

Haven't used it yet.

Get the aog and go ham, it's useless without it lol. Just spend the first game killing minions to get it.

True. Might hop on when I get home from work.

25 charge rifle crits to finish G4 challenges. Level 37 right now.

I'm not quite sure I'll ever get to gen 10. I just don't have enough time to do challenges like that. It'd take me a decent while just to get proficient with the charge rifle let alone be sniping crits.

It's really not that difficult. You just have to shoot ogres in the face from rooftops lol. I actually really like the charge rifle.

You can do it through rodeo. http://www.reddit.com/r/titanfall/comments/22a2yy/g4_charge_rifle_crits_not_registering/ Second post details where to aim. Tbh, I'm not really actively trying to achieve them. It's only 30, so it'll come when I'm grinding out these 13 levels anyway. I did miss a couple shots though and currently have 7/7 for the kill challenge but only 6 for crits.

I haven't come across a challenge that was really difficult yet. Gooser will suck, but it'll probably be dropped to 5 before I hit 50. The only reason Gen 4 took me so long is because I've always been terrible at sniping and the speed of Titanfall is unforgiving.

If you have trouble with something, check these two threads:
http://tf.reddit.com/r/titanfall/comments/214sbi/the_road_to_gen_10_thoughts_and_tips/
http://www.reddit.com/r/titanfall/comments/221eoa/reflections_and_tips_from_someone_who_soloed_from/

There's multiple methods of doing every challenge, just have to figure out which is for you.