Army Men: Sarge's Heroes - Mission 13: Sandbox (Part 2) - Sega Dreamcast

Having rescued Hoover, Riff, Thick, and Shrap, Sarge is informed by Colonel Grimm that Plastro has sent an ultimatum to the Green nation: "Surrender or be destroyed." The Greens' only option is for Hawk to destroy the last remaining portal in the most heavily guarded corner of Fort Plastro. Hawk eventually manages to use the portal after fighting his way through in an epic one-man battle. After believing Vikki had betrayed the Green army, Hawk rescues Scorch and is told that she stayed with Plastro to try to gain his trust and gain information, so the two of them deliver that valuable strategic information to the Green army.
Returning to Fort Plastro again, this time Sarge attacks from the east side of the base, managing to take it with the help of the Green army for the finale.
Vikki is discovered and Plastro sends a bomb through the portal, destroying the Greens' ability to pursue him, with Hawk being the only one who manages to pass through the portal by using it to escape.

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