Board Thread:Game Discussion/@comment-34609328-20180421054303/@comment-26388545-20180421074650

I did 3333333 but it was hard, mainly 8.3. that's the only stage that requires upgrades that high. Stage 8.4 & 8.5 could be done with lower upgrades. However skipping 8.3 will cost you 80 gold I think. That is far too much! Better just to buy the upgrades because you'll need them for career completion someday.