: Doesn't show up? On my Xbox he always shows up. You get the shotty guy, the
: plasma rifle guy, the carrier, and a few loose spores. Is PC genuinely
: different, or did you perhaps merely overlook the shotty guy on some
: occasions? Often the combat Flood are initially hidden around the far
: corner, near the exit door.

There are very distinct differences in some battles between the Xbox and the PC versions and they seem to be on the Keyes map specifically. On the PC version, the shotgun marine flood isn't there each time, sometimes neither is the plasma rifle enemy. Sometimes both show up and sometimes just the carrier form and a few infection forms are there. On my original X Box and my 360 the shotgun enemy is there each time with the carrier and the plasma rifle wielding flood.

There is a huge battle in the landing bay on the Keyes map where there are about 4 or 5 Elites hanging around a Shade turret and the flood are dropping down to attack them. When Gearbox ported Halo to the PC they reduced the amount of waves of Flood and Covenant in this area because this battle is much smaller with less enemies then it is on the X Box.