Add sprinting

As the post says, I like being able to go faster inside bases and on land.

Was just about to suggest this because i kiss the sprinting in bases and on land from the first game and Sub-Zero

I agree with OP. I understand it is something that sounds silly to add to the game, where you are underwater 80% of the time, but the 20% on any medium to large-sized bases makes the non-sprint very apparent.