Swim mechanic needs improvement.

First, you cant dive (why!? with all this armor on you... hehe...) Then, you lose stamina too fast. You swim like 50 metters and die, seriously? I do much better at my age. And im not a viking... hmm.. half-viking may be. There must be a way to regain stamina or so. Now swimming is too dangerous.

And, last but not least, if you can fight unarmed, you can use knife aswell, right? I'd love to jump into water and kill the serpent with my dagger. It's a pretty common heroic deed... WAY more heroic, then shooting four arrows standing on deck.