if u want to beat 300 the way i did was get the quaker build it all the way up then put the rest of ur money in to gunman and just constantly shoot it no matter were even if u run out of ammo once u get 1 round back use it it keeps them down does damage to them and ur gunman keep them back
 "A Knight's Story 2"){kind=icon}
 "Heavy Weapons"){kind=icon}
 "Storm the House 3"){kind=icon}