but- if breen actually teleported wouldnt that kill you as he states "you really shoulnt be up here, at the moment of synapse i teleport this chambre will be bathed in deadly particles which have yet to be named by human science" doesnt that mean if breen teleports you as freeman would die?
the only scary part in any half life game was the mod USS DARKSTAR where a security guard is threading water... then an ichthyosaur ATE him. Then you have to go into the water with IT.
i played this when i was 7 - thats why it scared me, still gives me the creeps though :(