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