Blaze and the Monster Machines: Axle City Racers (UP)
16 Achievements
0-2h
PS4
Happy time
Win a race in split screen
43.9%
How to unlock the Happy time achievement in Blaze and the Monster Machines: Axle City Racers - Definitive Guide
Combine this with the All Together achievement of four player splitscreen. Use the overdrive event set at 1 lap and difficulty on easy. Use Blaze for the fastest speed and all you have to to is leave the other local players standing at the starting line, while you beat the remaining A.I. racers in one lap.
To unlock this achievement, you'll need at least one extra controller (two total). Choose 'Play With Friends' from the main menu, and you'll need your second controller to sign in with at least a guest account. The shortest track is the final Overdrive Event from Adventure Mode, and you can set it to one lap to make it even shorter. Choose any racer you want. Note that you will also have a few AI opponents in split screen. You simply need to finish in the top three to unlock this achievement, which should be very easy to do on Easy.