Easy and Medium badges: Acquired on Sep. 11th 2010 - Hard badge: Acquired on January 13th 2019. Not that I was trying for most of that 8 years, but how time flies...
Can we get a better zoom out? Occasionally the camera will pan back, but it seems unrelated to speed/height. At sufficient speeds it becomes sheer luck whether you land on gummy, ground or cop because you can't see what's coming, even thought your character should clearly be able to. It'd also cut down on the grindiness, with less low-speed runs, and people would be more likely to hit pinatas due to longer, higher speed/height runs.
Would be cool if it was indicated somewhere that card packs all give out the same items. I did a 100% completion only picking mechano madness packs, thinking I could erase my data and play though again with entirely different upgrades from other packs, but no, it turns out you can get every item in the game just selecting the same kind of card pack over and over again...
The amount of locks I'm seeing make me not want to play. "Oh, you want this skill? This trait? Endurance mode? TOO BAD". I'm never going to pay for a browser game, so they'll just sit there forever, taking up space and being useless.
To perfect level 18: Immediately kill the fountain, cut the tree to the bottom-right of gems and place temple in the back four slots. As soon as you can, cut the sacred stone to bottom right and place a den (left-most four slots) and a second temple when possible (may take a few tries to do this without losing gems). Now use all mana to kill the stronghold and place crypt just below fountain, all while upgrading to overseers. Following this, you'll have enough mana to cut the north-north-west sacred stone and place a den just before valkyries come. Afterwards, cut the three sacred stones to the north-west of gems and place crypts (including on the high ground), with room left for another temple.
Now you should be set (keep cutting stones/trees and placing towers). Obviously skills are required. The beginning is reliant on having maxed Cut Out skills and as much mana as possible, as well as Haunted Cave and getting some lucky Demon Lord procs, if not some Sins Unleashed ones too.
@dawgydance - It's just you. Die and Deliver makes enemies that would have dropped a coin drop two instead. The same goes for the mana potion equivalent.
Poison is your primary weapon, but controlling the blues wins games. If you have all the blues, the enemy can't cure the poison and can't dispel your buffs, while you can keep poison off yourself and the buffs off your enemy.