How to implement a bonus system?

Question

Software design

I have a system of trophies that can be pumped.
In fact, they can influence any action. Now I think all the user's parameters (upon receipt) should be passed through the class that will give bonuses (everything. Not only from trophies.) Then shove this data into the fines class. Above these classes, build an abstraction (which manages all user data).
Or is there a better solution?