Got v1.4 a few hours ago and just beat it 100%.
It worked perfectly.
Used this (6th) playthrough to make an efficient guide with all the locations of upgrades, how to beat the bosses easily and info on health/ammo farms. I should've recorded it. Did some pro stuff this time around. Excellent game and hoping there's a sequel. Wouldn't mind a main weapon upgrade though. Flame thrower would be cool but a shotgun, even better..?
That's right Baby, first one on the planet to beat the 'final' version!