Achieve 50% accuracy in a single game
Collect 12 medals
Collect 128 medals
Collect 38 medals
Destroy 100 ships
Destroy 1000 ships
Destroy 500 ships
Rank up for the first time
Get a score of 300 points or more
Hit a ship four times in a row
Win 100 games
Win a game in hard difficulty
Win 10 games in hard difficulty