Here is the full list of all 38 Tractorball achievements.
Win the Rookie Tournament
Win the Newcomers League
Win the Junior Championships
Win the Farm Open
Win the Pyramid Tour
Win the Paradise Cup
Win the Polar League
Win the Intermediate Championship
Win the Scull and Bones Cup
Win the Ripper Tour
Win the Kamikaze Memorial
Win the Lucky League
Win the Rubber Duck Championship
Win the Big Bang Championships
Win the Chill League
Win the Torment Tournament
Win the Endurance League
Win the Big Boss Challenge
Win the Pro Championships
Win the Masters Championship
Take out a tractor
Take out 50 tractors
Take out 250 tractors
Finish a match without goals against
Finish 10 matches without goals against
Finish 100 matches without goals against
Win a match
Win 10 matches
Win 100 matches
Score a goal
Score 50 goals
Score 250 goals
Score 3 goals in one match
Complete 10 hattricks
Complete 100 hattricks
Get 10 or more goals in a match
Perform a perfect VBIED
Perform a perfect Kamikaze run