Here is the full list of all 26 Code Rivals achievements.
Beat basic training 1
Complete the basic training
Kill your first active droid
Have your robot destroyed 5 times
Code a better reload sequence
Complete combat basics
Run code 100 times
Host a multiplayer match
Join a multiplayer match
Use the random code generator
Share code in a multiplayer match
Import code shared by other player
Win a multiplayer match
Win 5 multiplayer matches
Win 10 multiplayer matches
Win 20 multiplayer matches
Win 50 multiplayer matches
Win 100 multiplayer matches
Win 200 multiplayer matches
Win 300 multiplayer matches
Win 400 multiplayer matches
Win 500 multiplayer matches
Win 750 multiplayer matches
Win 1000 multiplayer matches
Rank #1 in Leaderboards
Victory on a survival mode wave