* Add 1 Part 88811 Flat Silver Minifig, Weapon Bladed Claw (match ID 1)
* Add 1 Part 98138 Flat Silver Tile, Round 1 x 1 (match ID 1)
* Add 2 Part 4073 Trans-Light Blue Plate, Round 1 x 1 Straight Side (match ID 1)
* Add 2 Part 61409 Dark Bluish Gray Slope 18 2 x 1 x 2/3 with 4 Slots (match ID 1)
* Change {1 to 2} Part Black 4595 Brick, Modified 1 x 2 x 2/3 with Studs on Sides
* Change {2 to 3} Part Blue 3023 Plate 1 x 2
Comments from Submitter:
Page 3 of the instructions show how to build a jet pack for Batman (you can see it on his back in the box photo).
All the pieces required to build this item are missing from your set inventory. They should be included as regular items.
After the build, I had exactly the same extra parts in your inventory, so the extras are correct.