The Slow Mo was actually a glitch turned feature. I won't bore you with specifics but holding it down for long actually increases your speed to about 10 times the speed cap due to some oversights with how Godot manages joints and vectors during Slow Mo. I do intend on making this a required mechanic for harder levels, but right now feel free to go really fast.
Thanks for playing and I'm always for feedback even after the jam ends.