Orguss (Sega SG-1000). Japan/Europe (PAL). Score: 42 800. Stage: 3.

0:01 The main attempt starts.
11:20 Main attempt. Game over.
11:22 Alternative attempt starts.
20:54 Alternative attempt. Game over. Third stage reached.
20:57 Failed attempt.
This game has built-in autofire: the mecha shoots repeatedly if the player just presses the fire button. Note that I managed to reach the third stage in this video (second attempt), but the score was a bit lower.
Full non-cropped and/or shortened video: • 42800 2021 02 22 12 24 48
It may also include: other settings (not shown in this video), failed or worse attempts, system boot-up, loading sequence, etc.
Played for Lvlupscore and Twin Galaxies.