Here is the full list of all 20 Just Xiangqi achievements.
Win your first game
Finish a game in retro mode
Have a tie game
Win 3 games in a row
Complete 10 games
Complete 10 endgame puzzles
Win an online game
Review 10 games
Win an individual tournament in career mode
Overall rating reaches "Low" in career mode
Overall rating reaches "Medium" in career mode
Overall rating reaches "High" in career mode
Overall rating reaches "Top-tier" in career mode
Win the "Spring Cup Team Tournament"
Achieve either a win or a daw in the game against Yiming Li
Win a league championship in career mode
Win a top-tier championship in career Mode
Complete 3 games in career mode
Claim the championship in a blitz competition
In friendship with 5 Xiangqi players in career mode