Defend the Lab! is a feat in Plague of Shadows. It can be achieved by not breaking any gray block in the Explodatorium boss fight with Shovel Knight.
Tips
- This feat can be done with bombs, but it is very tricky, as if you miss or Shovel kNight deflects a bomb into the block, you will not get this feat
- The Staff of Striking Arcana is very useful for this feat.