Finally done a run on msx2 - shoutouts to @DARPMOSH who made his run that motivitated myself to do one as well. the Save Loading trick is a massive help but sadly I didn't do my best. Big Boss definitely was too careful and I died 2 times because of it.

Remember you can sadly softlock apparently if you end big boss too close to the corner of the screen as seen here:

This run was streamed live on twitch as well, here's the back up vod:

openMSX machine verification can be seen at 1:59:50 in the Twitch vod or 1:59:58 in the YouTube vod

openMSX 18.0 used machine: Panasonic FS-A1WSX