If you have blender installed you can use the image viewer in that to open the image which can then be saved as .tga / .png to open in other programs. It's because the dds file is compressed in rgba format (ar88 or something)
btw i feel this a good time to remind you guys that sea of thieves was made by rare, who also made DKC1-3 and DK64, alongside banjo kazooie and conker's bad fur day