action something done (usually as opposed to something said); "there were stories of murders and other unnatural actions"
beachhead,
foothold an initial accomplishment that opens the way for further developments; "the town became a beachhead in the campaign to ban smoking outdoors"; "they are presently attempting to gain a foothold in the Russian market"
cakewalk an easy accomplishment; "winning the tournament was a cakewalk for him"; "invading Iraq won't be a cakewalk"
exploit,
feat,
effort a notable achievement; "he performed a great feat"; "the book was her finest effort"
masterstroke an achievement demonstrating great skill or mastery
credit used in the phrase `to your credit' in order to indicate an achievement deserving praise; "she already had several performances to her credit";
performance any recognized accomplishment; "they admired his performance under stress"; "when Roger Maris powered four home runs in one game his performance merits awe"
track record,
record the fastest time ever recorded for a specific distance at a particular racetrack; "the track record for the mile and a half at Belmont is 2 minutes 24 seconds held by Secretariat since 1973"
