So first thing's first. I'm happy you enjoyed our game, and loved how it looked.
Second thing, Yes spinning your mouse will get tiring. The team is working on a way to ease that problem, its just taking a little while longer to balance out.
Third thing, we do have an item to regen stamina, but I'm assuming you meant health. As of right now we don't have a health regen item, but if we did it'd be a small regen and it wouldn't be able to bring you back up to full.
We're glad you had fun playing the game though!!!