4 minutes and 06 seconds. No death/room resets. Sub 4 possible but extremely tricky! Having no major flaws like resetting has made it clear that sub 4 mins is harder than it seems. There's a handful of minor movement improvements to be made, but the only "major" time-save I goofed up on (that I noticed) was on the 3rd to last room. You are able to avoid the right-most spring entirely and chain-hop from the button, to mid, to the door with no interlaced frames of movement. This is a little tricky but definitely do-able, and it doesn't matter what direction you're facing when you pull it off, but I believe facing right makes it easier. All in all I'd say there's at least 8 seconds of time to be saved, but I'm not sure I have it in me to grind out such a perfect run haha.