For Bakshi's death-by-splinter bomb, the visual effects team had created the effect before for earlier episodes, so they had that "pretty much dialed in".
"The Dirty Half Dozen" features "Easter eggs, plot threads and other connective tissue leading into the opening scene of Avengers: Age of Ultron", including the appearance of Goodman as List and Smulders as Hill, reprising their roles from the films [REF].