I posted this somewhere else but I'll post it here too.

I got another idea for a sequel. How about being able to swim? Havin a skill like that that would allow the character to swim. For example, go into a secret, hard to find underground passageway, or into the sea to Atlantos (or whatever it was that Apolo called it):D.So lets say, the higher the skill level that further and faster the character can swim. Also, into how deep a waters the character would jump into and how long he/she can hold breath would depend on skill level.

Another thing:being able to throw rocks. One way to cross shallow waters would be to throw big rocks and make a passage way (And maybe cause an overflow ). Which would cost stamina as well as require certain amount of strength to pick up and throw certain rocks within a certain amount of distance. This would also be a good way to do some major damage to enemy.