Opportunist is an ability of the Sniper Class in XCOM: Enemy Unknown.

Eliminates the Aim penalty on Overwatch, and allows reaction shots to cause critical hits.

– In-Game Description, XCOM: Enemy Unknown


  • This allows a Sniper with Squadsight to be an extremely deadly guardian angel of the team, since this "subclass" rarely moves and can stick to Overwatch almost every turn.
  • In XCOM: Enemy Within, a Squadsight shot without using Headshot has a 0% Critical Chance. This makes the "allows reaction shots to cause critical hits" to come into play less often than in the original game.
  • With Training Roulette, this ability also applies to the reaction shot of Suppression.