The SNES game was based upon the original PC MechWarrior, with updated graphics that utilized Mode 7 for the Battlemech mission sequences instead of the PC version's flat-shaded 3D graphics.
The main character is a MechWarrior named Herras whose family was killed by a group of military rogues called "The Dark Wing Lance." Playing as Herras, the player battles many enemies, trying to seek out the leader of the rogues, while relying on intel from a host of contacts and allies at a bar on a nearby planet in the system. In the end, the player's objective is to hunt down and kill the members of the Dark Wing Lance and avenge the deaths of Herras' family.
Source: Wikipedia, "[en.wikipedia.org/wiki/MechWarrior_%281993_video_game%29 MechWarrior (1993 video game)]", available under the CC-BY-SA License.