For those who struggle with the last badge. Just go to youtube and search for a video that shows a strategy how to beat it in <18 days. This game is all about strategy folks.
FINALLY !!!!!!!!! AFTER 10+ tries i finished it in 17 days ! My best till today was 19 days and I got 19 like 5 times in a row. Today I tried a new strat and it worked pretty well out ! I'm so glad I finally got it in s possible to be done in 15.
Got all gold medals on about 60-70 minutes. Insane 2 is definitely the gayest level, it alone took me 20 minutes to finish with gold. It's because it doesn't have circles, which are really useful on insane. Btw I got all but 1 at the last level from the very first try, I wasn't even fully upgraded.
This is the first game on this site I play all the way through, got all gold medals in ca. 2 hours, Insane difficulty was fine imo. The strategy is to change your upgrades for every level, I saw the "reset" button too late, lol. I was already at hard difficulty. And always go back to finish for gold medals, as you will definitely need the upgrade points. Have fun all.