None.

A man is shot in the arm. Blood drips.

Another man is crushed by a boulder.

A group of men are injured and covered in blood after a rockslide.

Mild violence between the monsters.

Ghidorah goes out on a rampage on Tokyo causing much destruction

Very little. "Damnit" Once, "Bastard" Once.

Two fairies translate what the monsters are saying. At one point, they translate a monster roaring to "Oh, Godzilla! What terrible language!" as if the monsters were swearing in monster-language. Played for laughs, though.

None.

The short shootout at the end is a little intense.