The Technomancer
40 Achievements
GOG
Warrior
Unlock the entire warrior skill tree.
3.3%
How to unlock the Warrior achievement in The Technomancer - Definitive Guide
Mortilect
TrueAchievements
TrueAchievements
This achievement, and the other achievements associated with upgrading a tree to max, can be done in one playthrough if you hold off on spending any skill points until level 25 (24 skill points). At this point SAVE, pop the achievement for the tree, and reload and repeat.
The, Pants, Party
Each skill tree in the game requires 24 points to max. However, you can only max one per playthrough, which is why we are not spending any until you get 24 saved up. Obviously as I mentioned before, this will make the game quite difficult in the beginning since you will be weaker than you should be, but it will save from doing four playthroughs, so it's worth the hassle. Once you get 24, save and max a tree, reload and repeat. Revert to your main save and then spec your character how you like, based on which weapons you'll want to use.