In LEGO Batman: Legacy of the Dark Knight,players can obtain a hidden Red Brick during the ACE Chemicals mission. This collectible is found within the Red Hood Gang story arc and requires specific character interactions to retrieve.

Using Gordon's foam to clear the ACE Chemicals pipeline

To secure the collectible, players must progress through the ACE Chemicals level until they encounter the objective to "Follow the bears." According to the report, this path leads to a narrow corridor where members of the Red Hood Gang are visible below. the Red Brick itself is positioned inside a pipe, obscured by glass, requiring a specific sequence of actions to extract.

The puzzle requires the player to switch to Gordon , who possesses the ability to spray foam on the pipeline. As the guide reports, the Red Brick does not emerge immediately; players must repeatedly use Gordon to seal leaks in the pipe as the brick moves through the system. This mechanical loop ensures that players engage with the environment before the item finally pours out for collection.

The Toxic Waste Modifier and the push for 100% completion

Collecting the Red Brick in ACE Chemicals unlocks the Toxic Waste Modifier, which serves as a cosmetic addition to LEGO Batman: Legacy of the Dark Knight. While the modifier does not alter gameplay mechanics, it is a critical asset for those pursuing a perfect save file. The report notes that all Red Bricks are mandatory for players aiming for 100% completion of the game.

This pursuit of total completion is a hallmark of the LEGO gaming experience, where cosmetic rewards often act as the primary incentive for exploring every corner of a level. By tying the Toxic Waste Modifier to a specific puzzle in ACE Chemicals, the developers encourage players to master character-specific abilities beyond the basic requirements of the main story.

Returning to the Red Hood Gang arc via the Batcomputer

Players who overlook the Red Brick during their initial playthrough do not need to restart the entire game . The LEGO Batman: Legacy of the Dark Knight interface allows for targeted replays via the Batcomputer located in the Batcave. By navigating to the Red Hood Gang section and selecting the ACE Chemicals mission, players can jump directly back into the action.

Once the Red Brick is released from the pipeline, the game offers two ways to exit the area. Players can either backtrack through the level or utilize Batman's unique skill set to yank open a hatch and grapple through the opening. This provides a shortcut that rewards players for utilizing Batman's high-mobility tools after completing the Gordon-centric puzzle.

A classic LEGO puzzle pattern in Legacy of the Dark Knight

The design of the ACE Chemicals puzzle reflects a long-standing tradition in LEGO titles, where "Red Bricks" act as unlockables for game-wide modifiers. this pattern of hiding essential collectibles behind character-specific gates—such as Gordon's foam—has been a staple of the franchise for years, ensuring that the player's roster of characters remains relevant throughout the campaign.

By placing this specific challenge early in the Red Hood Gang arc, LEGO Batman: Legacy of the Dark Knight introduces players to the concept of the "collect-a-thon" early on. This encourages a mindset of thorough exploration that will be necessary for the more complex puzzles found in later stages of the game.

The mystery of the 'Follow the bears' objective

Despite the clear instructions on how to find the brick, the narrative purpose of the "Follow the bears" objective remains unexplained in the source material. It is unclear why bears are present in a chemical facility or if they serve a larger plot point within the Red Hood Gang storyline. The report focuses entirely on the mechanical steps to obtain the Red Brick, leaving the surreal nature of the objective as a point of curiosity for the player.