A1-1

Hint
"Get it down!"

Solutions

 * Use a Wood Chipper (source, official website)
 * Create a Lumberjack and equip him with a Chainsaw (source, official website)
 * Use a Woodpecker (source, official website)
 * Use a Ladder (source, official website)
 * Use a Beaver
 * Throw something at it, like a Ball or Rock