I think I've done everything I can but it would take forever to get there.

It really is a very enjoyable game, great progression system.

I agree, seems almost impossible since I'm only getting 33 billion soulstones every 2.5 seconds with all infinities, 13,050% increased swordsman passive damage and 254,929% increased resource collection. it'd take over 57 years to get it at this rate :(

I am also around this point right now. Earning around a  terra soulstones every 2.5s, which is not nearly enough to reach the 1000 quintillions that infinity is capped at X)

You just need to wait for the game to update, infinity soulstones is not currently attainable within a reasonable time span

Soul is not implemented yet, so it is not reachable yet. 
Coming Soon.

Oh dang , I just got to the point where I can buy the soul, didn't realize it was unimplemented lol

one other way to get infinity soulstones is to press F1 and enter "set soulstone max" ;)