[quote name='zewone']Yeah, I did.

Epic. I'll be amazed if anyone here will get level 100 legit. If I didn't glitch level 100, I'd still have everything but that.[/QUOTE]
I guess you're lucky MS didn't flag you for cheating and reset your gamerscore since they reported they were doing this a few weeks ago for all the people who were level 100 since it was mathematically impossible to have reached it yet. Most of the people I've seen online ranked 100 also have their gamerscore/history marked private too.
[quote name='Matt Young']Oh shit. I thought that since the first Wingman achievement was public only, they all were. There are no specific guidelines for the Flashback and Combustible Wingman achievements.[/QUOTE]
Yeah, in general only those achievements that state "Public Matches" are required to be done in public matches.
[quote name='The 7th Number']Yeah i got the wingman achievement now. That was easy. I just tried like 5 times to get some of the scorch the bloodmounts achievement in allfathers garden on level 10 of horde on casual, and wow i must suck cos i keep dying and i cant get any kills. If i try to go for a shield i just get murdered by grinders. If i stay in the middle and wait for the bloodmounts i still end up dying. Its like they only hit me once or twice and im dead.
Only achievements i need to get full 1750 points is
- Beat game on insane
- Kill 100,000 enemies
- Capture 10 meatflags in Submission (public only)
- Win Annex match on each flashback and combustible map (public only)
- Reach level 100 and win on each snowblind map (im only level 56)
- Beat waves 1-50 on a snowblind map
- Kill 25 bloodmounts while playing dark corners map[/QUOTE]
I've been playing level 10 on Highway and sticking back in the nook up stairs in the middle where the grinder spawns. Pretty much none of the bots will enter the nook besides the bloodmounts and the only other risk is when the Kantus' throw their ink grenades at you.
Myself, I still need several of the new Horde achievements (new to me since I had none of the map packs before), the Annex one, rank 50/100, along with the co-op campaign and Insane completion.