Addictive, intense, fresh and accessible.
Nowadays with so many titles proclaimed as simulators, the line between game and exercise is very thin. Titles like Escape from Tarkov or the Arma series require hours of preparation, learning, and "playing."
Ready or Not, with its CQC and "short" matches -depending on the map and your skills- is a perfect excuse to once again wield a virtual weapon with realistic mechanics and have a nice time.

Pros:
Beautiful maps, non-repeated assets, polished environments, detailed and well executed story telling. Refined animations and atmospheres worthy of a movie.
Freedom of attitude when facing combat, nice and balanced equipment configuration and a gentle learning curve; although it is one full of surprises and lessons learned by force.
There is no frustration, a failure is quickly repeatable.

Cons:
It is well known that AI is currently problematic and in cases more terrifying than a hacker with wallhacks.
There is no progression system other than unlocking the next mission and cosmetic items.
In some sections, when the game loads assets, you may experience some input and visual lag.
The graphic options are few and briefly explained. This could lead to a wrong graphical configuration for your system.
Mechanics and functions are not fully explained in the tutorial, but this is not a bad thing either, as a player it can be rewarding to discover them for yourself.

Overall, a title that I highly recommend to fans of the genre without hesitation. A well-polished successor to the SWAT saga but that requires a little love in future patches.