1 Credit Clear of Giga Wing.
This run uses Ruby and clears with the score of 54,259,878,641,640
Played as part of the La Calice Cup 8 shmup tournament.

Giga Wing is a 'vertizontal' shmup developed by Takumi in 1999 and published by Capcom on their CPS-2 arcade system, home of many legendary arcade titles. The central mechanic of the game is the Reflect Shield, which allows you to reflect enemy bullets, dealing damage and spawning score items on impact. The score items exponentially increment a score multiplier which grows over the course of the entire game. With optimal use of the reflect shield, you can achieve frankly absurd scores, reaching into the tens (or even hundreds) of trillions.

The reflect mechanic is very well implemented, and is really satisfying to use. It's an easy to understand mechanic that offers vast scope for optimisation, which is a winning combination. On top of that, the game has bright, detailed pixelart, a cool soundtrack, and doesn't outstay its welcome. It's an all around excellent game that I would definitely recommend.

To comment on the run. I used a couple of panic bombs in stages 3 and 5, which really ate into my boss bonuses later on. Otherwise, I executed my route pretty cleanly, so I can't complain too much. Iit's not a terribly difficult game overall, but there are no extra lives to be had, so you do need to be vigilant.

As always, if you want to learn more about the game, check out the excellent page on the shmups wiki:
https://shmups.wiki/library/Giga_Wing

Shooting Game Never Die.