Overshields are for Sissies
|Halo: Combat Evolved Anniversary|
It is possible to complete this achievement along with the "Walk it Off" achievement.
Simply avoid entering the Covenant boarding crafts. Due to close quarters of this level, grenades are very useful in both killing and drawing enemies out of cover. Throw grenades while still staying in cover. Burn through the Covenant using Plasma rifle on Sangheili and Pistol on Unggoy, and one will eventually get to the end of the level.