I like this, but it feels like its early days. You need to lean into the lighting more, really push more brightly and dimly lit sections, strong color choice for the lighting used too. Audio effects and dialogue would contribute a great deal of humor- tossing in some generic mook gossip to listen to is a big plus. At this stage, even including it as small closed caption style text at the bottom would still deliver the idea, without needing to put in placeholder voice acted dialogue or pay anyone.
Please lean all in on the sex appeal. Not every guard needs to be a big titty Doberman, but I wouldn't complain if there was plenty along that line in your final release. On that note, different guard types - denoted by being different characters (Doberman, Cat?, etc) with distinct idle/ at work silhouettes would go a long way to clearly informing the player what sort of threats they need to look out for, while leaning into your strong character design skills.
Maybe a hub area for relaxing and socializing with NPC's/ clients, and a shopkeeper for upgrades? I only suggest this, because whenever I see your stuff the most appealing part that comes to mind is your unique characters.
I played on windows and did not have issues advancing up to the tuna level btw.