None.

Suprisingly heavy on violence.

-Mechagodzilla breaks Anguirus's jaw. Blood drips out and we seen Anguirus's mutilated mouth.

-Mechagodzilla viciously shoots Godzilla with missles, causing his neck to spurt blood like a fountain.

-Some aliens are shot, and they spurt black blood. Some also turn into ape like creatures and their appearance is gruesome.

-Two characters have a brutal fight.

-A man is sliced across the hand with a knife.

A few "damns" and "hells" thrown about. One use of "bastard". Use of g_dd--_n"

A character smokes a cigar.

Another character drinks some alcohol.

Godzilla appears to be dying or beaten in some scenes. This may distress viewers routing for him.

An alien ape attacks another man with a knife. The scene is introduced by a jump scare.

Mechagodzillas appearance looks slightly creepy.