For anyone wondering, filling up the 120 bar (combined levels of all gems) allows you to reset gaining a +0.2 multiplier on manual gem collection, and raising the next level requirement to 140
Woot nightmare done... 438750 points on nightmare (that is with 5 stars). Not too hard once you learn what powerups are worth getting:
Mining: Minor gain in the long run, if you take it, take it early.
(Multi-hit?): Despite only being 75, this is amazing. This alone allows you to take out the early bosses without killing previous mooks.
Bamboo armor: This is a huge damage reduction consider how much you get hit.
(Blood drinker?): This combined with bamboo armor allows you to keep going and going.
Soul drinker: More specials, and revive your allies more.
Shadow copies: Mainly for the final boss.
For the first level you have to take out a few mooks before the boss, but past that the allies you can get really help for the next stages allowing you to kill the boss without taking out too many mook squres. I would still try and grab mountains on the way though. Don't get over confident though, later levels you will need to take out some mooks or you end up falling behind.
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