Any tips for final feats? (light spoilers, probably)

[68ST0X20]

I have only 4 feats left to complete - earn 1 million coins from banks, get 100 nuclear buildings, get 1,000,000,000 coins and get 1,000,000,000,000 coins.

The first one is not too difficult, but it is slow due to the increasing cost of adding more banks.

I haven't really started on nuclear buildings but this looks like I just need to spend time in the void earning nuclear materials and then farming nuclear machinery. I note that this does not seem to require the buildings to be powered, so I can have nuclear buildings sitting idle?

I'm not sure how to handle the last 2 though. I get a decent amount of money by activating the 2x merchant sales buff and then selling all of my gems, then going to the void for more. But this earns me maybe 5 million a go - this will take forever for the final feat. Any hints on how to earn more? Do I need to keep building banks, then stack nuclear power plants around them and spam building scrolls?

[martingolding96]

If lighthouses still increase the amount of items from mining, farming ect then you could set up as many as you can in an area and use the quarry or dig spots to get loads of items that way

[NOIRE-]

I think 40 lighthouses and a hundred slime sigil will do

[Killer]

For the 1st feat, take the Builder buff and build as many banks as possible, then build nuclear power plant around them. You can spam building scrolls or take Industrious buff (or both) to make it faster. Know that there's a bug in which the nuclear power plants stop working whenever you leave the homeworld instance (as in entering treehouse, dungeons, void etc) so it's best you don't enter other instances for this feat.

The 2nd feat does not require the nuclear buildings to be active, so just grind nuclear mats and upgrade buildings.

The 3rd and 4th feat require pure grind. I built lighthouses surrounding an area, built fences and spikes in it, drank the Greedy potion, then hold left click on the spikes using death rod. After collecting tons of bones, I took the Merchant buff and sold stacks of em. I tried using boss sigils but the materials required to craft many is a grind by itself.

If you don't have that much time to spare, I do recommend using mods to get the achievements since it's just mind-numbingly boring task to complete.