Here is the full list of all 46 Chariot achievements.
The base game contains 36 achievements, and there is 1 DLC pack containing 10 achievements.
Find the hidden level.
Find all alternate exits.
Find a different entrance than the one you came in through.
Find the Sandstone Ruins sepulcher.
Fully upgrade the Chariot.
Deliver all Chariot blueprint crates to their destination.
Find the Obsidian Pits sepulcher.
Unlock all gadgets.
Encounter a looter of each type.
Find the Crystal Chasm sepulcher.
Fully upgrade a gadget.
Find an alternate exit.
Find the Luminous Abyss sepulcher.
Reach maximum speed with the Chariot.
Find the Verdant Burrows sepulcher.
Deliver a Chariot blueprint crate to its destination.
Unlock a gadget.
Play a level from beginning to end with a second player.
Completely reveal the map of a level.
Find all three skulls in any level.
Reach any exit of Woodland Vestibule without using the rope.
Reach any exit of the Hive without alerting any looters.
Reach any exit of the Crystal Castle without winding the rope or locking.
Reach any exit of Molten River without respawning.
Reach the exit of the hidden level with no gadget equipped.
Completely reveal the map of all levels.
Find all three skulls in every level.
Obtain a bronze medal or better in a speed run.
Obtain a bronze medal or better in every speed run.
Obtain a gold medal in a speed run.
Obtain a gold medal in every speed run.
Obtain a gold medal in a speed run with no gadget equipped.
Get 12 seconds of air time with the Chariot.
Spend 500,000 loot.
Locate and obtain the largest type of blue jewel without a second player.
Reach 100% completion.
Try out all three versions of the Royal Arms.
Find all standard and royal gadget blueprints.
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.
Go swimming in lava and emerge unscathed.
Complete a level with the Shopkeeper.
Finish the Chasm Crossing speed run within 70 seconds.
Use the Omni Boots to withstand 10 Flipper flips.
Collect ALL the hidden level's loot and reach the exit without losing any of it.