Knuckles: Horde of Enemies

"A horde of giant enemies will try to interfere in your race with Knuckles."

- Sonic Generations In-Game Description

Knuckles: Horde of Enemies is the third Challenge Act in Green Hill Act 1 from Sonic Generations. This Challenge Act is also the first Challenge Act to feature Knuckles the Echidna. Due to the Challenge Act being in Act 1 of Green Hill, only Classic Sonic is playable.

Description
In the late-afternoon time at Green Hill, Knuckles the Echidna challenges the player, who controls Classic Sonic, in a race to the Goal Plate. In a 2.5D perspective, the player must go through badniks (namely, Moto Bugs, Buzz Bombers, and Buzzers) and obstacles to beat Knuckles to the Goal Plate. However, several badniks are three times their normal size, thus making the race a bit climatic to get through. If the player can successfully beat Knuckles to the Goal Plate prior to one minute and twenty seconds, he/she are awarded an "S" rank.

Trivia

 * A remixed version of Mushroom Hill Act 1 is the background music for this Challenge Act.
 * This is one of the few instances in the Sonic the Hedgehog video game series where the original zone was in the daytime, but this Challenge Act takes place during the late-afternoon. Other instances of this occasion occur in Splash Hill Zone from Sonic the Hedgehog 4: Episode 1 and Windy Hill Zone Two (Wii U version) and Zone Three (Nintendo 3DS version) of Sonic Lost World.