Complete the following tasks to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", then "My profile", then "View all my games", then the game and view stats.

Achievement	How to unlock
Blue Bug's Secret	Solve the secret of the blue bug.
Bonus Doodle	Unlock the bonus doodle.
Bug Killer	Let at least one bug die in every doodle that contains a deadly hazard.
Campaigner	Complete all doodles of the main campaign.
Careless Artist	Draw ink over 100 bugs.
Collector	Import a doodle that was created by another player.
Deft Touch	Solve doodle 5 "Skydiving Lessons" with a single stroke.
Journeyman Doodler	Reach the rank of Journeyman Doodler.
Knight in Shining Armor	Rescue ALL bugs in all main campaign doodles (except "Suicide Mission").
Life-Guard	Rescue a total of 10,000 bugs.
Marathon	Solve all main campaign doodles in a single game session.
Master Doodler	Reach the rank of Master Doodler.
Mega-Collage	Create a new doodle with at least one element from every main campaign doodle.
No Regrets	Solve doodle 14 "Ghost From The Bottle" without using the eraser.
Pacifist	Solve doodle 20 "Suicide Mission" without killing a single bug.
Pen of Steel	Solve enough doodles for a total completion time of more than 10 hours.
Pwned!	Beat the developer time in doodle 13, 17 or 18.
Quick 'n Slick	Solve doodle 15 "Things That Go Bump In The Night" in 2 minutes after removing the first barrier.
Smoking Pen	Complete all main campaign doodles in a total time of under 3 hours.
Thrifty	Solve doodle 11 "Dancing On The Highwire" without running out of ink a single time.
Work and Play	Create a new doodle and play through it.