Just beat the game "floor 20" with only galileo since there's no other science building, since my science generation is 3.07k and the telescope cost 50M science.
Tip to unlock Caravan e Galileo:
Caravan need 250 Sx gold and Galileo need 100 sp.
Keep upgrading the helicopter then quarry, it seems the explosion is based on quary tap value.
Use the rest of the gold to upgrade the rest of resources then keep selling everything, until it shows up, best if use the fast mode.
Why not do this: Miner bot cost 120 but if you reach 5 sec build time, the cost goes to 240 and the time reset so when it finishes building, it build 2 miners
Some additions: Turret control- Cone of fire or area to guard, persist aoe abilities for x sec or drain on energy, since instant abilities makes no sense, things move fast and die hard
Change the % of staffs for how much time it take, maybe add +1 charge every time it fully charges, so if you are away when you get back you get X charges.