Here is the full list of all 24 DERU - there are The Art of Cooperation achievements.
Hand it over
Tought, Taught, Protected
Race through the levels
Those hugs are priceless
There is always that one friend
Breathe! Breathe! Breathe!
Unbridled producing
Jingle those bumps
Berserkers do not need other people
Faith in your partner
Courage to face the ordeal
Liberty of difference
Abundance of shapes
Dependence on circumstances
Through the Triangles
You are a terrible hero
Such a quick death
You already died so many times
Boss is coming soon, prepare!
You really need long here
Say sorry!
Well, if Life gives you lemons...
What mechanic did you just learn?
No A-team needed here