All Alone Achievement: Help?

Games Other Halo
1

I have had an incomplete Halo: Reach achievement list for way too long. Please help me get this completed! I have 4 slots filled with my main account and 3 spares already. We just need to fill a zombies session, so all we need is two more people with 4 players or fewer with more math.

Here is my TrueAchievements game session:
https://www.trueachievements.com/gamingsession.aspx?gamingsessionid=777425

2

This should be easy right now while the servers aren’t working; simply keep searching and you’ll eventually get booted into your own game. Make sure you pick the appropriate map(I got this achievement on the one with the low gravity in the center where a rocket launcher spawns. Containment maybe?). Should be quite easy this way.