Here is the full list of all 19 Webbed achievements.
Finish the main story without eating a single fly
Help Mike and Wendy cross the puddles
Complete your sticker book
Weave 1000 webs
Eat every fly
Pull the spider-bot out of the rubble
Dance with every species of bug
Find all the golden webs
Send the bird away
Reunite with your boyfriend
Roll a dung ball down the hill
Help all the baby spiders home
Bring all the pollen to the queen
Get a lift home from a bee
Travel 20 meters without landing on solid ground.
Wear a helmet
Recover all the ant larvae
Earn your own skateboard
Weave your first web