Friday 8 Oct: Achieng finished eighth in the 100m breaststroke at the Commonwealth Games in Delhi.
The final of the Commonwealth Games 100m breaststroke (UK users only)
She finished in 1min 10.73secs, almost five seconds behind the Australian Leisel Jones who won in 1:05.84.
Thursday 7 Oct: Achieng has qualified for Friday's final of the 100m breaststroke.
BBC swimming commentator Adrian Moorcroft thinks the teenager needs to work on her leg-kick though. "She's only doing half a kick and needs to get her feet up to her bum," says the former Olympic gold medallist.
Tuesday 5 Oct: Despite reacting quickly to the starting buzzer, Achieng finished fifth in the final of the 50m breaststroke in a time of 31.56.
Monday 4 Oct: Achieng is through to the final of the 50m breaststroke at the Commonwealth Games after winning her heat and finishing second in the semi-final.
Thursday 23 Sep: Achieng has arrived at the England swimming squad's training base in Doha where they will be making final preparations for the upcoming Commonwealth Games in Delhi.
Saturday 14 Aug: Achieng struggled again at the European Championships, only making it to the 50m breaststroke semi finals.
Read a summary of the day's action here.
Tuesday 10 Aug: Achieng has failed to qualify for the 100m breaststroke finals at the European Championships in Budapest after she finished last in her heat.
Read the race report here.