Press the bombs before they go out! Times until difficultly comes up: 20 seconds = Level 1 Hardcore (4 seconds until the bomb explodes) 42 seconds = Level 2 Hardcore (3 seconds until the bomb explodes) 75 seconds = Level 3 Hardcore (2 seconds until bomb explodes) 110 seconds = Level 4 Hardcore (1 second until bomb explodes) 170 seconds = Level 5 Hardcore (0.6 seconds until bomb explodes)