Undead Line is actually pretty approachable
I finally got to spend some quality time with Undead Line after getting the recent Retro-Bit rerelease several months ago, and I thought I'd offer my impressions.
You may have heard of this game in the context of its notorious high difficulty, but after spending a few sessions with it, I was pleasantly surprised to find it to be one of the more approachable Genesis shmups. I played on Easy mode, which is a feature not even guaranteed to be present in a Genesis shmup, let alone actually balanced to be "easy," but I was able to 1cc it by my third session.
This is remarkable, because I've played a lot of shmups over the years, some quite rigorously, and have never 1cc'd any, ever. Or really even come close. At least on paper, I think that makes Undead Line the easiest shmup I've ever played. Of course, that's only on Easy mode, and when I switched to Normal I don't think I managed to even beat two stages 😅. Still, I recommend this one if you're looking for something you'll be able to clear without quitting your day job.
One possible critique is that, in a game with a lot of different weapon types, I get the sense that most of them aren't that useful, and one of them (the twin daggers) is extremely useful. I just use twin daggers all the time and it works on everything. If anyone has other tips about the weapon types, I'm all ears.