A character gains perks from:

1 - Leveling up.

2 - Receiving 3 checkmarks (from battle goals usually).

Gaining a perk signifies an evolution of the character’s attack modifier deck.

Whenever a character gains a perk, they mark any perk they want off the list.

Apply the bonuses of the marked perk box to the character’s modifier deck using the class’s accompanying deck of available modifier cards.

Each class has their own unique deck of available modifier cards to pull from when gaining a perk.

If a perk has multiple check boxes next to it, this means that the perk can be gained multiple times for the cost of one perk each.

Example: The Brute marks the “Replace one card with one card,” so he removes a card from his attack modifier deck and adds a card (taken from his Brute modifier deck) in its place.