Beating a level in 0 seconds- Get black market, then the device that lowers the end level time by 45 seconds. After that, repeat level 1 and run through it using only warpspeed and healing technique, and it should be easy.
Congratulations! You just won the Around the World in 18 Days Badge and 30 points!
Game cleared (ve taken longer than the alotted time, you can refresh and clear your progress from the title screen.
x_X That was hard....
3rd badge on first try of challenge mode? I skipped normal and hard and went right to challenge... died at level 32 when I got bored of backpedaling away from 5000 enemies while firing dobule rocket launchers x_x
Hmm... I tried carefully choosing my upgrades based on the level and got to level 16... then I just bought them in order and got all the way with one extra day to spare o_O
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