Watching. Waiting. Plotting
Find your first missing link
Find a lonely missing link
Halo 3 MISSING LINK, PRIMATE AND HAPPLORRHINI – Achievement / Trophy Guide
There are 3 hidden Caveman Achievements you can find in the mission “Sierra 117”
MISSING LINK 0:03
The first one is in the small open area that’s built on river. Go to the water and look across. In one of the trees is a caveman. It is almost impossible to make it out, but if you zoom in, the achievement should pop after a few seconds.
All 3 Achievements here were delayed for me and didn’t unlock right away. If this happens to you and you’re not sure if you got it, shoot it a couple of times, zoom in and out and you should get it at a later time.
The next area will have a lot of snipers sitting in the trees. Stay left and jump onto the stone which has a sniper on it. Take the narrow path and look left for the next achievement.
You will come to a big open area with lots of enemies near the end of the mission. Walk to the middle of bridge and look to the rocks on the right. This Caveman is hardly visible again and is sitting in front of a bush.