@Eklispe

The CS looks good, save for it from the custom technique.

''Covers the body of the user in water which slows down any impact before it can reach the skin, This technique lowers the speed of the user but essential enables then to react to any attack before it lands.''

Before any attack lands? That sounds quite odd. It lowers the speed, but yet enables to react on any attack? You should likely take that out. As for weakness, I think you need to say that it lowers the speed and lightning. Fire is actually the thing that a water armor would be useful against, but would be suicide against a lightning release user.