This is always something I get very stressed over when I play a game that has some kind of talent or ability tree. Is it possible to upgrade all abilities or will I have to be careful on which ones I pick in order to make sure I get the best bang for my buck.
For alienation, you can not upgrade all of your abilities. You get 15 ability points to spend on the active and passive abilities. Once they are gone, that is it. No re-roll and no way to obtain additional ability points in order to max out all of the abilities. Spend the points wisely! If you pick abilities you don’t like you cant change. There are not enough points to upgrade everything.
Check out the character classes section of the guide for more on what the character abilities do. This will help you determine the best abilities to use for each class. However, it’s best to wait a while before spending anything above the first in order to determine if the ability suits you. I found some abilities didn’t work for me.