Around 1 hour 37 minutes to beat this easiest setting on 9 credits setting with 2 lives, 3 credits leftover. I started on Arcade difficulty which was 20 minutes of that. I beat Journey mode on my second full attempt on that setting. Very good shooter. I will likely try again on the next difficulty up.
Lost a few lives from trying to switch weapons. My controller was not mapped properly as I had set it. Fucked me up a few times since I could not find the buttons to switch and switch back mid combat which got me killed. As such I avoided weapon switching for most of the playthrough which makes things harder.
1