Around 1 hour 39 minutes to beat (Complete the first loop). There was only 2 sticking points for me. There was a turret wall sequence that took me 10-15 minutes of retries and the final boss section took me around 40 + minutes. Aside from that I beat most , if not all, the other sections on the first set of lives or after using a single continue. Good shooter. My only annoyance with it is the momentum of the ship which adds unneeded input lag to the movement. It can be seen as a gameplay mechanic though, depending how you view it.
For this playthrough I show my first time exhausting all lives on a section and then I show the first successful completion of a section with that set of lives (after continuing). I edited out any extra continues I used on the sections since it would be redundant. I show the first failed set of lives to show where the checkpoints are and how progression works. The game has infinite continues but you have to complete each section on a default set of lives or you restart the section. Each stage has several checkpoints so I was cruising through the game except for a few parts. When you continue you start with the default set of lives and a fresh stock of bombs so you can brute force most of the game.