Development HTML5

It must be using features of HTML5(specially which are not supported by HTML/HTML4 example- local data storage) Just overview: There will be tanks, guns, enemy's (object, army) and the 1 hero which will be controlled by keyboard/mouse, Hero can fire gun/bombs/launchers on tanks and enemy's, it must show some health of Hero, it will get reduced when enemy fire on him. In starting there will be option to select our favorite hero from 4 or 5 hero's it will be good if game have multiple map selection. along this also need to create document regarding same that will have diagrams like sequence diagram, activity, architecture etc, and some more thing which i will disclose one i will select developer. Its good if you attache/show me simple example you have created in html5 in past, that will be good for me to award project