This is a really fun fast-paced map. I lost concentration in the opening and went way too deep on raising the stairs losing almost a second but the rest of the run went really well.

Raising the stairs early is the only route change I made. It's hard to say if it saves much time but I think it might save a second or two. It also has the benefit of enabling an enemy to drop elevator on your way to yellow keygrab like happens in the run. That alone can save you a ton of time. I also had enemies open 2 doors for me which is not infrequent.