Assuming you don’t get turned around, this is a fairly short level. Coupling it with killing 50 combat forms will slow you down, but it’s definitely not impossible. The trickiest spot is one of the containment rooms. You’ll notice a crate covered in blood with a shotgun on top. Use this crate to jump up to the second floor since there is not an actual path up.) Otherwise this is very straightforward.
Note: When you come to a flickering broken bridge, it is possible to jump across if you time it perfectly/ This can shave a minute or two off of the clock as well.