I handled all the sound design in Premiere Pro. I first gathered the audio I needed from Pixabay which were a few different versions of ambient sci-fi tracks, mechanical movement sounds, alarm loops, footsteps, and a gasp for the woman. I generally searched for categories that could fit the vibe of the video and searched with keywords. After organising everything and decided which ones to select, I started layering the audio in a clear order so the audio stayed readable.
I began with a very low-volume ambient sci-fi track to establish the lab atmosphere. This stayed in the background throughout the sequence and acted as the base layer. Once that was in place, I added the character and mech sounds: metallic footsteps synced to the mech’s movement, rotation/servo sounds for turns, and the woman’s gasp during the override moment. Finding mechanical sounds that matched the weight of the mech without sounding cartoony took time, so I tested several until they fit the movement properly.
The alarms became the main functional layer. They needed to feel urgent but not dominate the mix, so I balanced them above the ambient track but kept space for the mech sounds to cut through. For the shooting moment, I added a laser-type gunshot effect that matched the visual style of the mech.
The final step was adjusting the gain, fades, and timing of each layer to make everything sit cleanly. The alarms and key effects form the top of the mix, while the ambient track stays low enough to give the lab environment depth without ever overpowering the action.