H-Have you actually played this? What wolf? Do you mean Loken the husky?
It's explained later on WHY the MC understand their language.
The MC has no memories but does have his subconsious memories. Amnesia USUALLY effects explicit memory (conscious recall of events and facts), but not always implicit memory (unconscious knowledge and skills). This is the most common form of how amnesia effects the mind.
People travel to and from the area where they live, they aren't completely blind to oceans existing.
Saying axes and shields as primitive technology is true considering the MC know about AI and an age of technology.
Also, please use paragraphs or just breaks. You're massive wall of text is difficult and painful to read through.