Ha, this is a fun one — love the Torn City flavor text, definitely fits the "surviving another day" vibe of the game.
Ingredient-wise, ngl coffee + energy drink together is a genuinely wild caffeine stack, that's basically the real-life debate of coffee vs energy drinks except you just said screw it and did both at once. The taurine + caffeine + sugar combo is gonna hit way harder than either alone, so fair warning to anyone trying this irl — that's a legit "why is my heart doing that" amount of stimulant if you're not used to it.
The whiskey add being optional is a nice touch too, feels very "in-universe" flavor design, like something you'd actually see as an item description upgrade path in Torn.
Only thing I'd tweak if I made it myself — maybe cut the milk ratio down a bit if you want it to stay more "bold and dangerous" instead of drifting toward a dessert coffee, since between the sugar and energy drink it's probably already pretty sweet before the milk even goes in. But solid concept, nice writeup.