changing world i need information

rluck

if i change world will i lose all achievements? what do i keep changing?

xxsly

As in fortress or event achievements? No. They are tied to your account name, not world.

rluck

with the money I spent, bases, do I start all over again?

xxsly

Yes, it's a new world, fresh start. If you have any funds left over, they're tied to your account and can be used on the new world.

EE_Elephterion

Greetings Commander,

as already pointed out, a new world always means a new start for everyone joining in.
You do keep your earned achievements and purchased TA-Funds however.