Here is how to complete the all you can eat sashimi achievement in the Fortnite Battle Royale Chapter 2 Season 1.
New to Chapter 2 of Fortnite Battle Royale is achievements and there are many different ones you can unlock for this season already. You will need to complete different tasks in-game in order to unlock them and you can view the achievements you have unlocked in the Career tab.

The majority of the achievements are self explanatory, but there are some that may not be so obvious. This article will show you how to get the all you can eat sashimi achievement.
How to get the all you can eat sashimi achievement
The description for the achievement is “ate all the fish and two plastic lobsters,” which doesn’t really explain how you can unlock it. There are three different types of fish that you can consume in Fortnite Battle Royale and these are the Small Fry, Flopper and Slurp Fish. To find out more about these fish and how much health/shield they give you, click here.

These fish can be caught by fishing in different fishing spots around the Fortnite map and they are a good source of health/shield as they are quick to consume. In order to complete the ate all the fish and two plastic lobsters achievement, all you need to do is eat 100 fish in Season 1.
There are still some issues with players not being awarded achievements when they have completed the task in-game, so you may need not get the achievement straight away.