Alpha Labs - Sector 4: Union Aerospace Science Division

Alpha Labs - Sector 4: Union Aerospace Science Division is the eighth level of Doom 3. Player must navigate either the EFR or the bridge(if one chooses the EFR, he must jump gaps and will miss the Plasma Gun. But if one takes the bridge, he can get the plasma gun, but will be swarmed by enemies.). There is the infamous "they took my baby" sequence, and the Vagary (first boss) appears at the end.