Use wetsuitVTG for triggering, you may try to add "oval dive mask", "weightbelt" and "knife strapped to leg" to accessorize, for the dive mask it's better to use in conjunction with this LoRA: https://civarchive.com/models/1108000?modelVersionId=1244886 since that was trained in a larger dataset.
As usual CivitAI rates most images as R incorrectly, so I would appreciate if you could vote to change their rating to PG or PG-13.