Premium Pick
Secret Agent
Best if you want the gun start, stronger solo control, and a smoother answer to hostile pressure without waiting for later weapon access.
Class Comparison
Secret Agent vs Surgeon in Animal Hospital
This comparison matters because these are the two classes players most often treat as their main answer. One is the premium control shortcut. The other is the strongest free long-run class. The better pick depends on whether your next problem is live threat control or cleaner shift stability over time.
Free Pick
Surgeon
Best if you want the strongest free value, better long-run healing pace, and more forgiving recovery once a shift starts slipping.
Pick Secret Agent if
You care most about solo control, early weapon pressure, and paying for the easiest route through threat-heavy runs.
Pick Surgeon if
You want the best free class to grow into and care more about total run quality than instant premium force.
Skip the comparison if
You still need a cheaper mid-step first, because Doctor is often the real answer before either of these becomes the next buy.
Secret Agent class
Open this if you want the full premium class breakdown after the short comparison.
Surgeon class
Open this if the free class route is already winning and you want the deeper Surgeon page.
Best solo class
Open this if your real question is solo play first and class comparison second.
Doctor vs Surgeon
Open this if Secret Agent is out and the real free-path choice is still Doctor versus Surgeon.