update 1.5.0.0

HA, I got bored again, here's an update for this game. NEW WEAPON !??1!!!??

List:

• Update the girls Ai to be more intelligent
• New grenade gun which shoots explosives 
• Some change to the player's movement code (it's kinda funky)
• Balanced the  girls more
• blah blah blah
• etc

Go have fun killing already

P.S. my best is 416, please beat my record