How to unlock all classes (collars) in Mewgenics

Mewgenics features 13 classes represented by collars, but you only start with four. Knowing what each class does and how to unlock the others helps you progress in this turn-based cat-breeding roguelike from the creator of The Binding of Isaac. The four starter classes are Fighter (default +2 Strength, +1 Speed, -1 Intelligence), a strong melee bruiser; Hunter (default +3 Dexterity, +2 Luck, -1 Constitution, -2 Speed), a ranged damage dealer; Tank (default +4 Constitution, -1 Intelligence, -1 Dexterity), built to absorb hits and push foes; and Mage (default +2 Intelligence, +2 Charisma, -1 Constitution, -1 Strength), who casts elemental spells.

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