Main Yard 1: Hidden power-up
You will start by some basketball courts and brick buildings. Stay to the far right of the screen and continue moving forward until you see a metal guardrail that fell down. Walk up that and follow the path until you have to turn left. As soon as you can, turn right to find a permanent accuracy power-up glyph. Press Action over it and your accuracy will increase. A flamethrower is also near the glyph.