You are trying to break the diamond to sell to others. You start out with one hammer and you can buy more hammers, saws, guns, or chainsaws. These are all the stats for each device. Diamond has 1,000,000 health. Hammer: Costs $100 does 2 damage and gets 2 dollars. Saw: Costs $250 does 12 damage and gets 12 dollars. Gun: Costs $500 does 25 damage and gets 25 dollars. Chainsaw: Costs $10,000 does 100 damage and gets 75 dollars. May seem hard but is actually kind of easy, you just have to wait.
For the project that comes before this go to https://scratch.mit.edu/projects/353621008/ You found me ;)