My suggestion would be checkboxes for common bulletpoints, with fields for adding additional information. I'd avoid including a "severity" or judgement call on those bulletpoints - "Sexual Content" instead of "Explicit Sexual Content", since details are often highly circumstantial.
We'd end up with "Violence" (chosen from bulletpoint) - "Contains one instance of low fidelity gore" (entered by developer into a text field).
Would also, for accessibility purposes, suggest including a highlighted checkbox for flashing lights/photosensitive epilepsy.