This is a tool-assisted speedrun. For more information, see http://tasvideos.org/3912M.html. TAS originally published on 2019-03-02.
Contra is a classic action game. Equipped with heavy artillery and infinite ammo, you must save the world by defeating the organization Red Falcon.
The authors save 7.83 (470 Frames @60 FPS) seconds over the previous run (http://tasvideos.org/1783M.html) via route changes, lag reduction, faster boss fights, and strategic player sacrifices.