The part of the sentence "complete a challenge" is correct and usable in written English.
You can use it in any context such as to encourage someone to do something difficult or to describe the process of achieving something difficult or overcoming a tough obstacle. For example: "He was determined to complete the challenge and become the champion."
Many companies won't even want you to meet Mya or her sister bots until you complete a challenge or two.
A Manx climber aiming to complete a challenge to scale the highest peak on each of the world's continents has set off on his final expedition.
The new rewards feature is part of this toolset and is pretty straightforward: businesses sign on, enter basic information like the name of their reward, and decide how many SCVNGR points a player must redeem to complete a challenge.
When you complete a challenge, you earn tickets that put you in the running for some impressive real-world prizes, such as a VIP NASCAR experience, a meeting with Lady Gaga, back-stage concert passes to Stevie Wonder, and tickets to MTV's Video Music Awards.
They invited each person speaking at the festival to complete a challenge using the neuroheadset and by moving their face.
They often have to do awkward advertorial-type stuff on camera, like using certain tools or mentioning how a certain product is really helping them complete a challenge.
A group of intrepid rugby players - led by Dumfries-born adventurer Jock Wishart - has completed a challenge to play rugby at the North Pole.
CEO Boris Revsin says that since launching the service November 15, over 100,000 students have completed a challenge and that nearly 500,000 challenges have been completed overall (obviously some students have done many challenges, and some only did one, but Revsin says the majority have come back for a second Challenge).
Unlike Wright, James Hicks said he received his food and coffee rewards whenever he successfully completed a challenge.
Completing a challenge grants experience points and may unlock weapon attachments.
