I may be only knit-picking, but being an old swabby (RAN) from downunder, I noticed that they have incorrectly named the island just south of Fremantle where the current R.A.N. naval base is, as Carnac Island. This should be in fact Garden Island. Carnac Island does exist; in fact it is a small island situated between Garden Island & Rottnest Island, the unnamed one WNW of Fremantle.
The same error has been noted on Google Earthwhich has Garden Island down as Carnac Island. I would have thought for authenticity & accuracy, the dev team would have done their research a little better since Garden Island was used to train the Z-Force team which caused sabotage to Japanese shipping in Singapore harbor later on during WWII & some of them were inserted into Japanese held territories by submarines based at Fremantle. Cheers