One of the most iconic classes from PF1 was brought into PF2 in Guns and Gears, and I think Paizo did a pretty good job here. The class feels very flashy, and I love the way that they made the Gunslinger work in PF2’s action economy. The subclasses all feel very distinct, and everything supports crossbows, so even if you prefer no guns in your fantasy you can still enjoy all that the Gunslinger has to offer.
Fair warning: The Gunslinger is complicated. It’s definitely more complex to play in combat than the classes in the core rulebook. Part of that complexity is that guns are complicated, but you also need to get good at managing both ammunition and your action economy across rounds.