Knuckles: Buried Treasure
Knuckles: Buried Treasure is the first Challenge Act of Sky Sanctuary Act 2 in the HD version of . It is unlocked after clearing every Sonic Generations Stage in the classic era and is playable only as Modern Sonic.
This Challenge Act stretches from the beginning of
Sky Sanctuary Act 2 to the entrance hall inside the ruins. The Act basically has the same layout as the main Act, but with a lot of different structures.
To pass this Challenge Act, the player must reach the
goal with at least thirty five medals in their possession. Having any less by that point will cause the player to fail the mission. To help find medals, the player is given a beeping sound, a directional arrow, and icons depicted above the medals to indicate their locations. However, the medals will always be buried in the ground, out of conventional reach. To reach them, the player must press / in their locations to call in Knuckles, who will then dig into the ground directly behind Sonic. The medals will then spray out of where Knuckles dug underground to be collected by the player. Sometimes, Knuckles can also dig up different Time Bonuses. Afterwards, Knuckles will jump out of his hole and disappear. Should the player call in Knuckles in the wrong spot, he will jump out of the hole in the ground and shrug before disappearing.
This Challenge Act is quite long and has several
checkpoints. The first section is much like the beginning of Sky Sanctuary Act 2, except the Egg Robos are more spread out around the scalar. The next scalar in this section has cubic-built walls that lead to more Egg Robos, then to a set of Springs that lead to the next section. Noticeably, to the far end of the second section, there are flamethrowers that guard a medal location. To disable these flamethrowers, destroy the Egg Robo within them. From there, follow the path and use both Switches to form temporary platforms and ride moving platform to get to the highest point in this section.
At the start of the third section, the path splits in two, which will merge back together later. These paths can be reached by either going forward or to the right using the
Jump Panel after the first bridge made of grassy platforms that collapse just after touching them. It should be noted that the path on the right initially consists of more collapsing platforms. Eventually, the player enters the penultimate section after crossing another path made of collapsible platforms that lead to the temple. To enter the temple, the player can either break through a window at the beginning of the third section or scale platforms to reach the main entrance further up. Inside the temple, the Goal Ring can be found on top of a fountain, which can be reached via a wide spring.
Knuckles with two mouths.
A peculiar animation glitch makes Knuckles appear with two mouths on each side of his muzzle.
This is the second Challenge Act that
Knuckles the Echidna appears in. After completing this Challenge Act successfully and talking to Knuckles in the White Space as Modern Sonic, he will respond with, " A treasure hunter is useful to have around, right?"
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Modern Sonic ( Modern Super Sonic) | Classic Sonic ( Classic Super Sonic)
Modern Eggman | Classic Eggman | Time Eater | Modern Tails | Classic Tails | Amy | Knuckles | Shadow | Rouge | Cream | Cheese | Silver | Blaze | Omochao | Team Chaotix ( Espio, Vector, Charmy) | Orbot | Cubot | Animals ( Flicky, Picky, Pecky, Cucky)
Wisps Cyan** | Orange* | Pink* | Red**
Green Hill | Chemical Plant | Sky Sanctuary | Speed Highway | City Escape | Seaside Hill | Crisis City | Rooftop Run | Planet Wisp | Casino Night
Green Hill | Casino Night | Mushroom Hill | Emerald Coast | Radical Highway | Water Palace | Tropical Resort
Challenge Acts* Doppelganger Race! | The Buzz Bombers' Revenge! | Knuckles: Horde of Enemies | Swingset Circus | High Speed Challenge | Look Out Below! | Tails: Way Past Fast | Jump Rush | 300% Boost Gauge Challenge | Tails: Toxic Skies | Which Switch is Which? | Aqua Shield Challenge | Invincibility Challenge | One Ring Challenge | Amy: Taking the Leap Together! | Grappling with Grabbers | Underwater Ring Machine | Eggrobo Rush | Aerial Paradise | Ring Time Challenge | Amy: Topsy Turvy | Knuckles: Buried Treasure | 200% Boost Gauge Challenge | Balloon Bonanza | High-Speed Hijinks (Modern) | Cream: Chao Hunt | Hot Pursuit (Classic) | High Speed Challenge 2 | Resisting Arrest | Overdrift | Hot Pursuit (Modern) | Drill Baby Drill | Espio: Master of Camouflage | Lord of the Board | Thunder Shield Challenge | Rouge: The Bombardier | Rite of Spring | Cream: Helping Hand | Dash Ring 1-2-3 (Modern) | Topsy-Turvy | High-Speed Hijinks 2 | Rescue the Animals! | Espio: Way of the Ninja | High-Speed Hijinks (Classic) | Underwater Challenge | Rouge: The Temptress | Trick Island | Surf, Sea, and Sand | Terror From the Deep | Goal Post Juggle | Vector: Through the Storm | Flame Shield Challenge | Ring Time Challenge 2 | Power Stomp Challenge | Switcheroo | Blaze: Piercing the Flames | Four-way Cannon Cavalcade | High-Rise Balloon Climb | Dash Ring 1-2-3 (Classic) | Charmy: Don't Bug Me! | One Ring Challenge 2 | Barrel Ring Bonus | Rooftop Rail Grind | Endless Boost | Vector: Pick Up the Beat | With Your Powers Combined | Goal Post Juggle 2 | Chase After Blaze | Rescue the Animals 2! | Cart Challenge | Charmy: High in the Sky | Action Master | Orange Rocket, Blast Off!
Aero-Cannon* | Butterdroid** | Buzz Bomber | Buzzer | Chopper | Cop Speeder* | Crabmeat | Crawl** | Dragonfly** | Flapper** | Egg Chaser* | Egg Diver** | Egg Fighter* | Egg Fighter: Sword* | Egg Launcher (H)* | Egg Launcher (H+V)* | Egg Launcher (V)* | Egg Pawn | Egg Pawn (spear) | Eggrobo* | Giant Chopper* | Gold Beetle** | Grabber* | Gun Beetle* | Gun Hunter | Iblis's Minions ( Iblis Biter, Iblis Taker, Iblis Worm)* | Kiki** | Klagen** | Madmole** | Mono Beetle | Moto Bug | Mushmeanie** | Newtron | Rhinotank** | Sandworm* | Spinner | Spiny* | Sprinkler* | Sweeper** | Thunder Spinner
Metal Sonic | Death Egg Robot | Shadow the Hedgehog | Perfect Chaos | Silver the Hedgehog | Egg Dragoon | Time Eater
Metal Sonic | Big Arm | Shadow the Hedgehog | Biolizard | Silver the Hedgehog | Egg Emperor | Time Eater
Air Boost | Atomic Spin | Bound Jump* | Cartwheel | Crouch | Double Jump* | Drift* | Freestyle Tricks* | Grind Step | Grinding | Homing Attack | Hop | Jump Dash | Kick boost | Lightspeed Dash* | Mid-Air Dash* | Quick Step* | Boost | Slide | Skydiving* | Spin Dash | Spin Jump | Stomp | Super Sonic Boost | Super Sonic Missile | Wall Jump
Chaos Spear | Drill Attack* | Fire Beam* | Heart Effect* | Ice Wave* | Meteor Smash* | Ninja Arts: Camouflage* | Propeller Flying* | Psychic Knife | Restraint Trap | Ring Spark Field | Sun Burst | V. Maximum Overdrive Attack | Warping arm attack | Whirlwind*
Color Powers Cyan Laser** | Orange Rocket* | Pink Spikes* | Red Burst**
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Gimmicks and obstacles
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Air Bubble | Boss Gate | Boss Gate Key* | Buoy | Chaos Emerald | Container ( Case, Spike Block, Steel Container, Unbreakable Container, Wooden Container) | Crank | Energy Core | Goal Ring | Information Pod* | Item Box ( 1-Up, Aqua Shield*, Flame Shield*, Invincible, Magnetic Shield**, Power Sneakers*, Skateboard*, Super Ring, Thunder Shield) | Medal | Mega Mack* | Musical note* | Red Star Ring* | Ring | Snowboard | Sphere** | Stomping Shoes** | Time Bonus | Wisp Capsule
English voice actors
Roger Craig Smith ( | Sonic) Mike Pollock ( | Eggman) Kate Higgins ( | Tails) Travis Willingham ( | Knuckles) Cindy Robinson ( | Amy) Kirk Thornton ( | Shadow) Quinton Flynn ( | Silver) Laura Bailey ( | Omochao, Blaze) Karen Strassman ( | Rouge) Michelle Ruff ( | Cream) Keith Silverstein ( | Vector) Troy Baker ( | Espio) Colleen O'Shaughnessey (
Japanese voice actors
Junichi Kanemaru ( | Sonic) Chikao Ōtsuka ( | Eggman) Ryo Hirohashi ( | Tails (Modern)) Takuto Yoshinaga ( | Tails (Classic)) Nobutoshi Canna ( | Knuckles) Taeko Kawata ( | Amy) Koji Yusa ( | Shadow) Rumi Ochiai ( | Rouge) Daisuke Ono ( | Silver) Nao Takamori ( | Blaze) Sayaka Aoki ( | Cream) Kenta Miyake ( | Vector) Yuuki Masuda ( | Espio) Youko Teppozuka ( | Charmy) Etsuko Kozakura (
Back 2 Back | Escape from the City* | Vengeance is Mine** | You're My Hero
Blue Blur: Sonic Generations Original Soundtrack | Sonic Generations: 20 Years of Sonic Music | History of the 1st Stage Original Soundtrack Blue Edition | History of the 1st Stage Original Soundtrack White Edition
Sonic's birthday | Boost Gauge | Chao in Space | Collection Room | Combo* | Corkscrew loop | Death Egg | Death Egg Robot* | Egg Dragoon* | Egg Gun | Egg Mobile | Egg Spear | Havok* | Health Gauge** | Lair of the Time Eater | Miles Electric | Orca | Perfect Bonus | Rank | Skill Shop* | Sonic Generations (manga) | Sonic Generations of Skate | Statue Room* | Time Attack | Tornado-1 | Totem Pole | White Space | Winding Tunnel | Wisp Gauge**
*Console/PC version only
** Nintendo 3DS version only