IanG

The descriptions of the mountain are good. Perhaps you could've had some banter between the characters. It would establish them as individuals we could root for rathet than all of them thinking alike

You could've made more of your narrator's reaction to the death of his uncle. Did he change his attitude to the beach due to that? If so, did he draw on memories of better times and so begin to enjoy it again? Perhaps he realised that nowhere is ever entirely safe and if the sea hadn't taken his uncle then something else might have.

Not 'too' far away rather than 'not to far away.'

'Blood was seeping into the snow' rather than 'blood was fading into the snow.' It would trickle down rather than turn pale.

Had you described the man flailing trying to retrieve his lost knife before striking back, then the action would've flowed better. You're descriptions of the fight are tense and fast moving, but bear in mind what I've written and you're writing will improve.