Vehicle No. 4: Balance & Bug Fixes (v0.6.1)

Balance Difficulty 1: Enemy Health per Wave 0.72 -> 0.69 Difficulty 2: Enemy Health per Wave 0.78 -> 0.75 Boss Wave 10: Base Health 1400 -> 1250 Nerf Circular Saw (Price increase) Wave 5 (Blue Box March): Drop Rate Scal…