Apologies pour l'anglais, je ne parle pas le francais.
I commented on Asdriens test run on youtube as opposed to posting here. Unfortunately there is no English thread in development and I didn't want to post in broken google translate French! He said it was okay to post here.
I have a real time run at 23:30. The route I used is based off this Japanese runners run (he has a 18:39) - which is far better than mine as it is deathless!
http://www.twitch.tv/m/625691 it uses things like charged shots, shortcuts to skip the crushers, despawning of crushers. There is also a trick were you can run along the top of the screen on Stage 22 - I haven't spoken to Zekinoma at all so I had to work it out from his video. I'm not sure if he/she is active anymore.
I'm not 100% sure how this trick works on Stage 22. If you just try to jump up you can't get up but if you spawn it and then scroll it off screen to the right you can jump on top then.
There is a SDA thread on this game which is where I learned of this information.
https://forum.speeddemosarchive.com/post/blues_brothers_snes.html
Apparently there may be more secret passages which he didn't know about. I have not looked into this.
I hope this is useful and apologies again for the English! I will keep an eye on this. Interested to see where it goes.