The Royal Gadget Pack Add-on for Chariot has 10 achievements.
Complete a level with the Shopkeeper.
Find all standard and royal gadget blueprints.
Go swimming in lava and emerge unscathed.
Finish the Chasm Crossing speed run within 70 seconds.
Use the Slowdown while the Stasis Field is active.
Have 20 looters looting the Chariot at the same time.
Warp an off-screen Chariot with less than a second to spare.
Use the Omni Boots to withstand 10 Flipper flips.
Try out all three versions of the Royal Arms.
Collect ALL the hidden level's loot and reach the exit without losing any of it.