The Tournament, 2009
Every seven years in an unsuspecting town, The Tournament takes place. A battle royale between 30 of the world's deadliest assassins. The last man standing receiving the $10,000,000 cash prize and the title of Worlds No 1, which itself carries the legendary million dollar a bullet price tag.
Scott Adkins is one of the assassins. He has one fightscene in the movie and there's one small scene in which he executes 10 people.