The Fight action has no order requirement. Conceal Order prevents performing Shoot and Charge actions (and counteracting), but does NOT restrict Fight. So even a concealed operative can fight if an enemy is within Control Range.
You cannot select an enemy operative as a shooting target if a friendly operative is within that enemy's Control Range. This is the "shooting into melee" restriction.
Each action can only be performed once per activation, but this resets afterwards. Counteract, ploys, and other abilities that let you perform actions outside your activation can use actions you already performed that activation.
Even if terrain is Intervening and within 1" of you, you cannot benefit from Cover if you are within 2" of the attacker.
Control Range requires BOTH being within 1" AND being Visible. A wall between two operatives 0.5" apart means no Control Range.
Dash allows horizontal movement and dropping down.
Each time you climb, it costs at least 2" of movement - even if the actual vertical distance is shorter.
If you enter an enemy's Control Range during a Charge, you must end there - you can't pass through unless a friendly is already engaging them.
The Heavy weapon rule prevents shooting if the operative has moved during the activation. However, Guard and Counteracting reactions happen outside the activation, so the Heavy restriction does not apply — you can move during your activation and still shoot with a Heavy weapon when reacting.
Even though they're presented on the same card, the Heavy Barricade and Light Barricades are two separate equipment choices. The 2 Light Barricades together count as one choice, and the Heavy Barricade is another. If you take both, that's two of your four equipment slots used.
When comparing Kill Grades, the player with the higher Kill Grade receives +1 bonus VP to their Kill Op score. If both players have the same Kill Grade, neither player receives this bonus.
Each op category has its own VP cap of 6 VP: Kill Op, Crit Op, and Tac Op. Primary Op is capped at 3 VP, making 21 the maximum total points you can earn in a game.