I like the theme idea, but vending updates duplicate a lot and are expensive, so sadly you need good luck early on to get a nice gun going- would be nice if they stack.
Gameplay itself gets repetitive, enemies shouldn't lock on instantly- maybe some ambushers yes, but its impossible to dodge bullets besides boxes, but getting in LOS makes you a target too. and they are more accurate then you. (made me die on the last lvl)
HP pickups feel like they get progressively worse? To the point where you get out-hurt later on.
Money pickups feel invisible? Would be nice to loot around the rooms too.
The shader retro effect carries the visual feel, I like it.
Controls menu is nice, volume too- but you cant change it ingame? and escaping makes you unable to look around anymore? Also the music dies as soon as you start the game- web issue? maybe?
Otherwise good for a jam entry.