Funny one, got it on 2nd try. I like when studying the board a bit before to start allows to spot the route. That was the case here for me.
I remove one star because the visual feels a bit messy. Due to that, I felt like more can be done after finding the winning route.
Good one that I find interesting, thanks the different plausible ways to use the locks and a few alternate wrong paths. It can probably turn into something more difficult by opening a few wall blocks.
One star for the intense relief I felt after I got it done... Sorry, but the repeat of the same locks and tricks one after the other non stop till target was boring to me.
One hint here: as you progress, always check ahead and think carefully how to optimize the next lock opening. If you can get it on first try, it's nice.