It makes sense in these conditions that sight would still work in some respect, I admit my error.  The characters' eyes do have yet to fully adjust, however.

[quote]There's nothing frantic about what the humans in that room are doing, the only chaos is coming from the movements of Grimm.[/quote]

I'm to believe that every single first-year hunter and huntress has nerves of steel, perfect eyesight, and perfect reactions in a situation like this?  I literally couldn't think of a scarier ambush.

As for the Grimm themselves, if anyone's having doubts, these are Grievers we're fighting.  All they have going for them is stealth and surprise.  Add in glowing eyes (which the RWBYpedia entry doesn't mention any Grimm having, by the way, just 'red eyes') and this 'scary' encounter is just a matter of single swings and lone gunshots.