Pretty sure i already played with "every modifier possible", but still haven't gotten the achievement, is it bugged? Also How Many "Jackpots" do i need for the Jackpot Achievement, all 5 slots?

I assume it was supposed to be easy, but i've failed 6 times. I can't upgrade, have no skills, and i have 4 barracks *only* putting out guards non-stop and i can't win? 5 spawns them too slow. what am I missing?

I find the game really interesting but as it stands I'm left with a lot of confusion about what to do in some areas. What are inferred to be core mechanics of the game are missing some general gameplay descriptions or explanations, such as Coins, Resource...

Is there any way to demolish buildings to make room for new construction? None of the icons appear to actually do anything when a building is selected. I'm probably missing something obvious-ish

Thanks.