After the scene where the head-crabbed soldier hurls the hazmat-suited scientist through the glass, there's a dead security guard followed by a head-crabbed scientist, then a security door. It's impossible to progress further as the security guard is dead or never spawns.
After the scene where the head-crabbed soldier hurls the hazmat-suited scientist through the glass, there's a dead security guard followed by a head-crabbed scientist, then a security door. It's impossible to progress further as the security guard is dead or never spawns.