Fans and data miners have frequently noted that Metal Slug 5 feels incomplete or rushed. Extensive research into the game's code has revealed a large amount of unused content , such as:
: For the first time, players could perform a sliding maneuver by pressing Jump while crouching, allowing them to dodge attacks and reposition quickly.
: The final boss, the Avatar of Evil , appears suddenly without the narrative build-up typically seen in the series. Metal Slug 5
Reviewers generally consider this entry to have a compared to Metal Slug 3 or 4 , with fewer enemy sprites on screen at once. A standard playthrough typically takes approximately 1.5 to 3 hours to complete, depending on how much extra content a player pursues.
This installment introduced several key features that distinguished it from its predecessors: Fans and data miners have frequently noted that
: Several planned environments, including underwater segments intended for the Slug Mariner , were scrapped before release. Performance and Difficulty
: Notable new vehicles include the Slug Gunner , a transforming mech that can swap between tank and humanoid forms, and the Spider Slug . Known Issues and "Unfinished" Status Reviewers generally consider this entry to have a
: Moving away from the series' traditional Morden’s Army, players face off against the mysterious Ptolemaic Army, a cult-like group that has stolen the blueprints for the Metal Slug tank.