In Mission 5, titled “The Holy City of Aratum,” players can find two distinct Ruby collectibles by accessing specific secret areas. The first Ruby is located in Secret Landing Zone 2 beneath Hell Carrier 1. To obtain it, players must acquire the Red Key and use it on the Red Door at the far end of the bridge, where they will discover a statue adorned with the Ruby, all within a room surrounded by gold.

The second Ruby can be found in a different secret area later in Chapter 5, specifically in Secret 6. Collectible guides and walkthroughs for the mission provide visual aids to help players locate both Rubies effectively. Players should pay attention to the glowing red statues marking the Rubies’ locations and utilize their maps as they approach these areas. It’s important to note that the retrieval of some Rubies may involve defeating enemies or solving minor puzzles, but there are no additional Rubies beyond these two for this mission.