@Tairo
@SpaceTurtle
@mage_goo
@WhimsiCat
The thing with the 3 people who got AoE attacked is probably just cartoon syndrome where people who get cut by swords doesn't get massive slash wounds to save on the workload.
But it could be because of " game elements "
Outside of the world working differently because of the game system, there are a few ways to explain what happened with the arrow too.
It's also possible that the 2nd thug fainted from the shock/trauma of the whole thing.
The most probable thing IMO is that he might have tried to scream, but because of all the blood and gore from getting his throat ripped out, he did not manage to make much of a sound.
The guys inside did, however, hear something that alerted them, so it's possible he actually made a sound but it wasn't a "scream" per se.
And ofc there is always the good old "because magic" excuse...
We did see a guy explode from water magic because of a stab wound after all...