onslaught

nouns

a sudden and severe onset of trouble

onslaught

is a type of (narrower)

an event causing distress or pain

"what is the trouble?"; "heart trouble"

(military) an offensive against an enemy (using weapons)

"the attack began at dawn"

attack, onrush, onset, onslaught

the rapid and continuous delivery of linguistic communication (spoken or written)

"a barrage of questions"; "a bombardment of mail complaining about his mistake"