I love singing games and this one is very easy to complete. It has some amazing songs and I learned about a few I didn’t know before. No missable achievements and it takes around 4h for completion.
Approximate amount of time to 100%: 4 hours
Estimated achievement difficulty: 7/10
Minimum number of playthroughs needed: 1, you can select songs
Is there a good guide available: Yes here
Multiplayer achievements: Yes, but if you have 2 microphones you can do it solo.
Missable achievements: No
Grinding Achievements: Yes, play 15/30 minutes
DLC-Only achievements: No
Time-gated achievements: Yes, play 30 minutes on a Saturday evening after 8 PM
RNG-achievements: No
Does difficulty affect achievements: No
Unobtainable/glitched achievements: No
I loved those sing games on my consoles. So glad to see some of them also on steam! This first title is very easy to complete, the second one is much much harder. One day I hope to have completed it!
The songs that are in this game:
Lady Gaga – Born This Way
LMFAO – Party Rock Anthem
Maroon 5 feat. Christina Aguilera – Moves Like Jagger
Bruno Mars – Grenade
Flo Rida feat. Ke$ha – Right Round
Miley Cyrus – Can’t Be Tamed
Example – Changed The Way You Kiss Me
Pussy Cat Dolls feat. Busta Rhymes – Don’t Cha
Train – Drive By
Fun feat. Janelle Monáe – We Are Young
Far East Movement – Like A G6
Avril Lavigne – What The Hell
Noisettes – Don’t Upset The Rhythm
Duffy – Mercy
Lana Del Rey – Video Games
Loreen – Euphoria
Miley Cyrus – Party In The USA
Taio Cruz – Come On Girl
Gabriella Cilmi – Sweet About Me
Aretha Franklin – Think
Bruno Mars – The Lazy Song
Gavin Degraw – Not Over You
Sam Cooke – (What A) Wonderful World
Chic – Le Freak
The Saturdays – Just Can’t Get Enough
Amy MacDonald – Mr Rock & Roll
Spin Doctors – Two Princes
Europe – The Final Countdown
Queen – Crazy Little Thing Called Love
Kool And The Gang – Celebration
Ini Kamoze – Here Comes The Hotstepper
Weezer – Buddy Holly
James Morrison feat. Nelly Furtado – Broken Strings
David Bowie & Queen – Under Pressure
The Saturdays – All Fired Up
Lady Gaga – Just Dance
Sean Paul – She Doesn’t Mind
Colbie Caillat – Bubbly
La Roux – In For the Kill
The Rolling Stones – Sympathy For The Devil
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Developer: 
This review is written on 5 September 2018 based on the Steam version which has 10 achievement when I write this review. The information can be outdated when developers add or remove achievements.