Here is the full list of all 10 Penguins Arena: Sedna's World achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Win 5 fights in a row
Win a match without losing any team member
Win 20 fights
Take part in 40 fights
Take 50 bonus
Win 10 duels
Win 50 duels
Win 100 fights
Take part in 150 fights
Take 200 bonus