This was one of Sierra's showcase games at the launch of Windows 95. It was built with Microsoft's Game SDK (which evolved into DirectX). The Game SDK allowed Sierra to create smooth animation and sound that Windows couldn't normally handle. New features of Windows 95 allowed the game to exist in multiple windows (each having a different function, e.g., ammo count, map, and actual game) that the gamer could open and close at will during play.
Computer Gaming World
November 1996 (15th anniversary issue) – #23 Worst Game of All Time