The Bullet Hole Glitch is a texture glitch that occurs in Halo: Combat Evolved and Halo PC. It results in bullet holes in walls that are inexplicably stained with human blood.
Halo PC[]
Fire a bullet from a human weapons nearly parallel to any surface that will leave a bullet hole (i.e. a wall or hard ground, not dirt or ice). At the point where the bullet hits, there will be a mysterious splotch of human blood. You can also use the method below.
Halo: Combat Evolved[]
Exit a level's boundaries by means of bumping (with a turret, for instance). Then, shoot any corner or edge of a wall with a human weapon, and the blood should appear. The method for Halo PC does not work on the Xbox version.
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