In case it's useful I paste my quick first levels impression / remarks from my EAB post :
Hi ! I've played quite a few games yesterday evening and reached level 3 boss (pretty tough one)... What can I say ?
- I feel you've hit the spot in terms of difficulty curve, which is extremely important for a shmup 
Right from the start, the game gives the feeling to be difficult but you improve very quickly (you = the player in my text .
There is a common pitfall the game does not fall into : the need to memorize everything. Obviously, the game gets easier as you learn to identify the dangers and the enemies patterns.
Another big plus : the game does not "artificially" try to raise the difficulty or its length but adding tons of waves, unexpected super pervert enemies, etc.
Oh, and super important too : losing a life and thus your equipment does not hamper you that much. Of course, it's tougher but far from being punishing. It usually means "game over" for me in games like R-Type.
Levels are long enough to entertain and put some pressure on you, but short enough not to bore you and not to make you super frustrated when you die after several levels. Also, you get extra lives based on your score.
You do not have tons of different ennemies but they are completely different from one level to the other and feel very fresh. Levels settings are very different : you do not feel content or games mechanisms are being recycled, so it feels varied and continually interested.
Generally, from a technical standpoint, it's very impressive for a one man effort. I'm playing it on my MiSTer FPGA on a projector on the wall, with some scanlines, and it looked gorgeous -- which I must say I didn't expect. Maybe it doesn't always feel as "dense" as some late Amiga endeavours with big teams (ex. Disposable Hero) but it really feels like an AAA game. Music feels it could do with an additional channel for a pad but hey, it's already very enticing.
The only thing that disturbs me a little is I have to continually focus to get the fire rate optimal. I guess that's something I'll probably master quickly.
Cheers !