The redux l used here is a very important and detailed design, having bit depth can have accurate dynamic range as well as quantization noise. i have put the automation on the bit depth, which allows the soundtrack to switch in between detailed and mumble sound. This also imitate the distance and how people actually truly walk, they use their weight and very steps might sound different.
While the character walks to the door, there is a strong wind coming to her. This wind design is utilized as a riser for the climax to begin. In addition, this wind also represents the start point of the future challenges. Thus, it must be composed with spatial composition, which adding EQ to cut off the high frequency and automize echo with changing left to right and quite to loud imitates the spatialisation of wind splash through the door.