I took an opportunity to up my Unity development game by taking a course offered by GameDevHQ. The course was thoroughly enjoyable and I ended up with a simple side scroller which I posted on itch.io.
*Plays best with Google Chrome or Firefox browser.
Use a,s,w,d keys (or arrows) to navigate. Esc to pause. The ship will auto fire when in front of an enemy. Avoid enemy fire and capture powerups for heath and weapon upgrades.
Just about at the 5 day (calendar time) limit so this is my submission with absolutely no polish or tuning. Needs final sound and additional boss weapons (at least).