Bug Fixes and Polish

Found or heard of four different places where the player could get soft locked, so those are fixed now. Also resolved graphical issues with climbing ladders and the player's bullets spawning in locations not next to their blaster. Also, thanks to some Discord advice I reconfigured how sound effects are played and set the default music volume to not be 0. All in all, I'm super excited about this gamejam and hope you enjoy the game!