Achievements are another way of gaining experience and winning prizes. Click the "Achievements" tab on your profile to check the list (click your avatar in the bottom left corner).

To gain an achievement, you have to perform a specific action (quest), it fills up the "Achievement" progress bar It results in reaching next Achievement Level.

You can level up the achievement four times:
first level - bronze
second level - silver
third level - gold
fourth level - platinum

For reaching the Fourth Achievement Level, you will obtain a cup and EXP; however, if you reach the Fourth Achievement Level by completing harder quests, you will receive banknotes.
There are six achievements categories:

Items
Rods
General
Fisheries
Fish
Master

You can check your progress using filters:
All - all achievements from one category
New - Achievements which have not been completed
Current - Achievements in progress
Done - Achievements on the fourth level