In ACT I;

  • Fighter has the Archery trait which will increase your ranged accuracy significantly (useful for Action Surge too).
  • The illithid passive Favourable Beginnings provides a drastic accuracy boost on the very first attack against a target.
  • And there is also Oil of Accuracy consumable which can always be used if more is needed.

In ACT II;

  • The Risky Ring from Araj Oblodra at Moonrise Towers will drastically increase your accuracy by giving you permanent Advantage on all attacks.
  • The Marskmanship Hat from Roah Moonglow at Moonrise Towers increases accuracy by +1.
  • The Drakethroat Glaive from Roah Moonglow at Moonrise Towers can elementally infuse your weapon for +1 accuracy.
  • The Hellfire Hand Crossbow from Yurgir provides +2 to accuracy.
  • Multiple various gloves which provide +1 accuracy.

In ACT III;

  • The Mirror Of Loss can be used to increase your Dexterity to 22, thus giving you even more accuracy.
  • Multiple various gloves which provide +1 accuracy.