Post jam update

QOL

• Added audio options
• Retouched the graphics
• Guards are easier to select

Balance

• Attacks have a longer cooldown
• Levels were fixed to be better enclosed
• Spy AI is more aggressive

Added

• Ranged Guards, a new type of unit that can shoot at a distance with a rifle
• Vent passages, special paths were only the spy can go through
• 4th level, with a ranged guard and two vents