[quote name='bigdaddybruce44']Yep, very easy and for a good amount of cR, too.
EDIT: Does anyone get a group together this week and play a little Objective? Figured if we work together, we can get that Stockpile achievement. I know I have done it before, but I'm sure now that there is an achievement for it, it will take forever.[/QUOTE]
I am going to try to explain how to get some of the achievements.
Cross-mappin: On Pinnacle, I was at the red spot on the far right, standing on the ledge and the other guy is the blue spot on the far left. That gives you an estimate on how far you need to be. Remember no objective games, slayer only. This is only for this map, a bigger map like hemorrhage might require you to be further apart.
You blew it up: Just reach the research facility and blow that bitch up and the whole team gets it. It is the second objective. So it's not too hard at all. Once you blow up the facility, everyone on the Elite team gets it.
You ate all the chips: How I got it, me and my team grabbed all four flags and scored them all at once. Easier said than done, maybe you will get lucky and play a very dumb team and get it. I can't confirm what Ryuukishi said because I got it in the middle of the game. Just like you blew it up, the whole team gets it. So you don't have to individually get it.
The others are pretty self explanatory and not that hard to get. I recommend multi-team for both barrels and totally worth it. Poppin and lockin is best achieved on a BTB map like hemorrhage and game type Elite slayer, because there are four ghosts for each team.