Sticks Stones Broken Bones, the show Achtem is bringing to New Zealand for the Comedy Festival, features his alter ego, Mr Bunk, who recycles household junk to create flying chickens, race horses, ninjas and even brains.
The stories he tells are more like live cartoons, probably because he learned the art of succinct and funny story-telling from reading newspaper cartoon strips. He describes his shows as light on dialogue, reliant on visuals, which means they work more easily anywhere in the world and appeal to all ages.
Indeed one critic compared Sticks Stones Broken Bones to a Pixar film, saying people of all ages would get something out of the show. Achtem says that may be because he writes with his father in mind, a doctor who wanted to go out and see something original, entertaining and only slightly challenging.
"I don't make pop culture references because they date a show and they don't work internationally so there are no references to Star Wars or jokes about politics. I try to keep it universal, but certain things do have to be altered for some audiences. There's a scene where two puppets kiss and in one country - I'm not saying where - we had to make it very clear that the puppets were husband and wife."
Leaving university in 1998 with a science degree, Achtem decided he was more interested in film-making but he grew frustrated by the length of time it can take to green-light movie projects.
Perhaps influenced by the travelling shows his parents took him to as a child, Achtem turned to street theatre and clowning, training in Montreal, France, Holland, Indonesia, Germany and Belgium.
"Clowns need something to do on stage so some make music, others juggle. I was playing around with a few ideas, which involved shadow puppetry, so it grew from there."
What: Sticks Stones Broken Bones
Where & When: Herald Theatre, April 29 - May 3, 11am & 6.30pm