With Your Powers Combined is the first Challenge Act of Planet Wisp Act 1 in the console/PC version of Sonic Generations. It is unlocked after clearing every Stage in the modern era and is playable only as Classic Sonic.
The player is given many constantly-regenerating monitors that are scattered all throughout the stage. All of these monitors will contain one or another of the elemental shields; Flame Shield, Aqua Shield, and Thunder Shield. Using the various jumping capabilities in combination with the protection of the elemental shields, the player needs to make it to the fire and lightning infested course.
The player begins just outside the factory area. They are very frequently given three choices of elemental shields, which they much choose from in order to get past the current obstacle. In the beginning, they must use either the Thunder Shield or Aqua Shield to climb the vertical platforms, which are distanced too far from each other to jump across normally. Next, the player must use the Flame Shield in order to safely pass the fire trap that blocks the player's path. From there, they must use the Thunder Shield to go through several active electric hazards, and from there, they will continue into the factory.
Once inside, the player can use any of the three shields to cross the gap, although the Aqua Shield is the most useful, as it can smash through the stack of breakable crates in one bounce. The next section will give the player specific shields to use, and the section after it will allow the player to use any shield to progress. After the previous section, the player will find the Goal Plate on a ledge to the right.