Kodiak Frontier

Kodiak Frontier is the first level in Sonic Boom: Fire & Ice. It is a snowy island in the north with several structures from native tribes. Due to Dr. Eggman, the island's environment was messed up by the by-products from the doctor's mining operations on Ragna Rock, creating fire and ice elements. This was brought to an end by Team Sonic.

Overview
Kodiak Frontier is an evergreen forest-themed island covered in snow with native tribes living there. The island has several giant totems in various designs, a few tipi villages hosting unseen inhabitants, frozen creeks, rustic bridges, ice-covered mountains, plant sprouts and flagged paths.

The first two adventure levels take place within Kodiak Frontier's forests. The paths there are made of ice- and snow-covered stone blocks while snow- and frost-covered evergreen trees (some of which are colossal in size), mountains, cliffs and totem poles cover the background. Along the paths are also frozen mushrooms, sprouts, purple thorns, branch-bridges, wooden scaffolds with horns, and flagged paths.

The last two adventures level are seemingly set inside a giant frozen crevice with snowfall. Here, waterfalls and tipi huts lie in the background. Alongside iced stone blocks, rustic wooden scaffolds make up much of the paths. Aside from frozen purple thorns, branch-bridges and small mushrooms though, no flora exist here. Other features include stitched walls sections and flagged paths.

Gameplay
Like in other areas, the adventure levels in Kodiak Frontier are divided into two parts (the foreground and background) that run parallel to each other, which can be traveled between with the Bounce Pad. Other than the Bounce Pad, standard gimmicks here include Boost Pads, Enerbeam Swings, platforms that move when stepped on, Rails, and disappearing platforms. Most noticeable though, are the blocks of ice/water that can be turned solid or intangible by touching them while using Fire/Ice Mode. Hazardous obstacles in the adventure levels include stationary rollers with spikes and pits with purple thorns. Touching such obstacles will inflict damage on the player and return the characters to their previous position. The adventure levels also have collectibles scattered about which unlock extra content if collected, breakable obstacles that give extra Rings, and Challenge Room entrances.

Like other levels in the game, Kodiak Frontier's adventure levels have several character-specific gimmicks for the playable characters. These include dash blocks for Sonic, Air Vents for Tails, pillars for Amy, and Boomerang Switches for Sticks which can only be reached with the Guided Boomerang. In addition, Kodiak Frontier features three bonus levels, each with different gameplay mechanics

Glacier Forest
Glacier Forest is Kodiak Frontier's first adventure level, which takes place in the forest. It is available from the start of the game. When first playing this level, only Sonic is playable. Clearing it unlocks Amy.

At the start, follow the path on the right and keep taking the paths that appear on the right. When sent into the background, keep following the path until it leads back to the foreground and follow the right path from there. When entering a room with a dash block on the right and a ice block on the left, the player can go left for a looping trip past Ice Fishing Cave or stick to the right-orientated paths from there to reach the level's fissure.

Frozen Hollow
Glacier Forest is Kodiak Frontier's second adventure level, which takes place in the forest. It becomes available after clearing Glacier Forest.

At the beginning, go right at first. Upon reaching the second pillar, ride it to the bridge above and go right; going left on the bridge takes the player for a loop past Crystal Grotto. Follow the path from there and keep going right when the road splits. Eventually, the player gets sent to the background, only to return to the foreground soon after. After that, when the path splits on a bridge, go right; going left instead leads the player down a looping path. Follow the right path until the characters enter the background. From there, go either left to enter a looping route or keep going right to reach the fissure in the foreground.

Cliffside Blizzard
Cliffside Blizzard is Kodiak Frontier's third adventure level, which takes place in the crevices. It becomes available after clearing Frozen Hollow.

At the start, follow the path until the characters reach a wooden bridge with a Checkpoint. Going left here takes the player around for a loop past the Whispering Caves. Going right here on the other hand will eventually take the player to another split path at a bridge with ice blocks on the right and a open path on the left, the latter of which leads across another loop. By taking the former path there and sticking to the right-orientated paths from there, the player will find the fissure.

Unga Bunga
In this level, the player encounters the local boss, Unga Bunga, a giant totem statue brought to life by D-Fekt. For this boss battle, the player controls Sonic and Amy. Clearing it unlocks Tails.

In battle, Unga Bunga attacks with arm rolls and fire-engulfed claps. Hit its hands when they are vulnerable to inflict damage. Then, when Unga Bunga's arms get stuck in the ground, use Amy to turn them into pilars for Sonic to climb and hit D-Fekt. After four hits, Unga Bunga will be defeated.

Snowy Peak
Cliffside Blizzard is Kodiak Frontier's fourth adventure level, which takes place in the crevices. It becomes available after clearing Unga Bunga.

At the start, keep following the paths on the right. Along the way, the player will reach a large room with a Checkpoint on the path to the right. Here, there will be a path on the left that leads to a looping path. If the player follows the path on the right with the checkpoint instead, they will soon be sent into the background. Right after that, the player can go left to find Frostbite Cave. By going right after being sent into the background instead, the player will come to a Checkpoint on a bridge. Going left from here leads to a looping path while going right from here will take the player back to the foreground. Keep going right after that and the fissure will be found.

Frozen Pipeline
Frozen Pipeline is a bonus level where the player must race to the end of an obstacle course while dealing with Fire and Ice elements. It becomes available after clearing Unga Bunga.

Darkened Depths
Darkened Depths is a bonus level where the player must navigate an undersea section with the Sea Fox and find the lone Trading Card within the level in time. It becomes available after clearing Frozen Hollow.

Crafty Maneuvers
Crafty Maneuvers is a bonus level where the player must clear a iceberg passage filled with destructible ice bergs, indestructible mines and whirlpools in the Hovercraft and collect the Trading Card at the end in time. It becomes available after clearing Snowy Peak.

Boulder Speedway
Boulder Speedway is the Bot Racing minigame of Kodiak Frontier where Sonic competes in a circuit race against Burnbot on Thunder Island. To clear it, the player must complete three laps before Burnbot.

Tails' Plane
Tails' Plane is the landing area for Tails' personal aeroplane. Here, the player can access the Could Map to reach other levels in the game.

Trivia

 * Kodiak Frontier may be based off the Pacific coast of North America where there are many evergreen forests and very cold winters. This area is also know for have hosted native American tribes.