Here is the full list of all 37 Trino achievements.
When total score hits 10,000
When total score hits 50,000
When total score hits 100,000
When total score hits 200,000
When total score hits 400,000
When total score hits 500,000
First 2 triangle combo
First 3 triangle combo
First 4 triangle combo
First 5 triangle combo
First 6 triangle combo
First 7 triangle combo
defeat a point eater
defeat a triangle breaker
defeat a triangle sucker
defeat a dart
defeat a triangle dodger
defeat a triangle maker
defeat a seeker
defeat a shelled enemy
catch the sushi
defeat a multi-shelled enemy
defeat a trino avoider
Defeat chapter 1 boss
Defeat chapter 2 boss
Defeat chapter 3 boss
Set Trino free
Make one triangle
Connect all CP in first level
Use the bomb once
Kill 10 enemies with one bomb
Use the shadow triangle
Trap 6 enemies in a shadow triangle
Kill any boss on first try
Get through a chapter with one life