In the end, Reidar invested all his points into A.C.U.M.E.N. as 19 more points would translate into a huge amount of mana.
Like that, Reidar jumped to 8571 mana points, which was a lot more than what he previously had.
As for the perks, he chose something that was situational. Since he had to kill a monster far too many levels above his, he decided to focus on those that would help him kill the creature.
The first was Pack Tactics, which gave a bonus to his summons damage and critical strike chance when attacking the same target. He invested 5 points, which meant his summoned creatures were going to have 25% more damage and critical strike chance if they targeted the same creature.
Reidar didn't know if he would need for all his creatures to focus on it or if all those that were targeting the same one influenced each other, but it didn't matter.
