To get more skill points in Aragami 2, you must complete and farm missions in the game. Players can start missions by heading to the quest board and accepting one. But simply doing missions will not be enough, and you will want to repeat ones that give at least 100 XP to 300 XP.
Doing so will allow players to farm XP to level up, and every time they level up, they will earn skill points which can then be used to unlock various abilities in the game.
Some abilities can help players with sneaking and stealth, while others can help players perform better in combat or kill guards with particular skills. Because of that, you'll want to earn plenty of skill points to unlock more abilities in Aragam 2.
You can unlock new abilities by speaking master Iwao in the dojo. If you don't know where to find master Iwao, you can find him by starting at the quest board, going across the bridge, and taking a right, as shown below.
When you speak to Iwao, you unlock various abilities on a skill tree, as shown below, some of which will require two skill points. Because of this, it's recommended to save skill points for more powerful abilities.
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