Quick question... How the hell do ya critically miss? Actually what does it do.

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In the original Fallouts you'd either end up injuring yourself, your teammates or breaking/dropping the weapon you were using. You could take a perk similar to Chaos Conduit called Jinks that had the same effect but every combat encounter would turn into mass hysteria as folks fumbled for their guns and blew up teammates by mistake. Usually the best strategy would end up standing completely still and letting the enemy inventively kill themselves in some embarrassing manner.

they cannot be seeing at all

Seen would work better in the rhyme scheme.

"Hum!" Ishwa whined, faking indignation

I think you meant humph.

Much Hype more gud!