Agreed but some people are really wired to achievements as modern games show. Making hard to get achievements may actually make C2 creators life easier, as people help. Maybe even add levels to the the badges? Or copper gold and silver for each?
4 more:
Tutorials:
Teacher (1), Tutorialist (10), Master Teacher (25), Aristotle's Protege(50)
Bug finder:
Bug finder (1), Pest Control (10), Bug Assassin(25) , Mater Exterminator (50)
Plug-ins
Plugin creator (1), Plugin Smith (5), Plugin Pro (10), Master Plugin Developer (25)
Similar for Behaviors -