Somewhat tricky achievement, the Bat for level 3 is at the very beginning of the level when you get off the elevator. You must have the bat all the way til the end. Clearing the bridge with it is going to be the most difficult part. I will cover that later, but once you reach the end with the 2 big enemies, get to the top of the map near the edge. Let them hit you and the bat will fall to the ground. Hopefully it lands where you can still pick it up. Beat the big enemies, and when that’s complete the screen will pan to the right. Pick up the bat and finish the level.