Monster Madness
50 Achievements
1,000
Xbox 360
A Hard Day's Rockin'
Play at least 24 hours of the single player adventure. Details for this achievement will be revealed once unlocked
25
How to unlock the A Hard Day's Rockin' achievement in Monster Madness - Definitive Guide
xLCDx
You don't have to do this all at once it is accumulative. Once you get 2/4 through your second play through assuming that you take your time and play each level correctly. You can also check the online leaderboards to find out how long you have played total.
