Help with Halo Reach Achievements

I had 100% achievement completion with Halo Reach before Halo Anniversary launched. Ultimately I discovered there were new achievements that were locked for reach, so I began looking for games and trying to unlock the new
achievements. Luck ran short when I still had 2 left to unlock;“Don’t touch that!
" and " All alone.” I realized that I needed Defiant maps to help unlock these final 2 but after the title update, I found out ‘these maps aren’t being used anymore,’ or maybe I’m not looking in the right playlists, or maybe the maps are so rare that I never see them, I’m not sure. Does anyone know where I could possibly look so I could get the proper maps to unlock these final 2 achievements?? Any help would be great. thnx

I have them all. Go ahead and add me and I’ll help you with these two.

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I have all of the DLC, GT: Deved zombie
I need hel with the achievements definant