Add a few minor tweaks for 2 Players mode

-Fixed the using of same SP/EN of P1 on P2

*The game not designed to fully support mouse control. For people found youself being stuck with the menu plese try using WASD to navigate through any options on menu screen, then using Left click for Accept and Right click to goback. You can also try setting your preferred control key by setting menu tab above the screen.

Thank you for playing!

-OSP