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Resident Evil 4 Gold Edition includes

Resident Evil 4 and two additional items of content: Separate Ways, where you experience the story through Ada Wong's perspective, and the Extra DLC Pack, which contains additional character outfits as well as useful weapons and items.
Resident Evil 4 on PS5 is a modernized remake of the classic survival horror game, featuring updated graphics, controls, and a reimagined storyline. Players experience the game through the eyes of Leon S. Kennedy, six years after the Raccoon City incident, as he investigates the disappearance of the US President's daughter in a secluded European village. The game includes intense combat against parasite-infected villagers (Ganados), exploration of a sinister environment, and puzzles to solve, all while fighting to survive and rescue Ashley. 
Here's a more detailed look:

Reimagined Story:

While retaining the core narrative, the remake introduces new surprises and twists on classic moments, offering a fresh experience even for those familiar with the original. 

Modernized Gameplay:

Players can expect updated controls, enhanced combat mechanics, and new ways to interact with the environment. 

Intense Combat:

Ganados, unlike typical zombies, are intelligent and wield weapons, presenting a greater challenge to Leon's survival. 

Exploration and Puzzles:

The game encourages exploration of the village, castle, and other locations, with puzzles to solve and items to collect to aid in the survival of Leon and Ashley. 

Stunning Visuals:

Built on the RE Engine, the game boasts photorealistic visuals, enhanced lighting, and detailed environments. 

Knife Combat:

Leon's knife is a crucial tool, with parrying and stealth mechanics adding depth to combat. 

Ashley's Role:

Ashley's AI and mechanics have been reworked, with simplified commands and improved interactions. 

Merchant:

A recurring merchant offers weapons, upgrades, and items, providing a way to manage resources. 

Gold Edition:

A Gold Edition of the game includes the main game, the "Separate Ways" DLC (featuring Ada Wong's perspective), and an extra DLC pack with additional outfits and items.