Here is the full list of all 19 Camp W achievements.
Unlock every memory for Sid's page in your Grimoire
Unlock every memory for Sophie's page in your Grimoire
Unlock every memory for Ruby's page in your Grimoire
Unlock every memory for Wilfred's page in your Grimoire
Unlock every memory for Blake, Miles, & Miller's page in your Grimoire
Unlock every memory for Ella & Ezzi's page in your Grimoire
Unlock every memory for Norm's page in your Grimoire
Best friends forever!
You learned Norm's story and unlocked the secret ending!
You've completed your Grimoire!
You've been there, done that, and then been there and done that again and again!
You have earned every last achievement!
You've completed one playthrough of Camp W.
You've earned every badge available to a Camp W Camper.