Raid question (third fight)

This is my second raid. First time doing it with an active Alliance. We managed to make it to the third fight in the left side. It’s HOOD. It says I’m supposed to punish his heavy or his special. I don’t see anything saying if I’m doing it right or not. And I don’t really know what punish means anyway.
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Or even inbetween a multi-hit one, if their timing is such that their multi-hit Heavies or SP's can be interrupted. (but mainly, right after it is done)
Similar to using BWDO, and punish (counter, etc) their Heavy/SP, to get her mode where she inflicts more Shocks.
1) use your tactic ability to increase that number
2) trigger prompts
The prompts combine with your tactic usage to give you raid charges. With enough you get raid force or whatever it’s called.
The more you use your tactic the better. As when you trigger a prompt you get more points per prompt.
So for example at the start, say you need 30 points to get a raid power up (raid force).
You complete your tactic once. And then complete a prompt. You get 1 point.
Later in the same fight, you triggered your tactic 5 more times.
Now when You complete the prompt. You get 6 points (instead of 1).
So once you complete your tactic a few times, the charges really start to flood in. But need to build it up. And then of course still have to complete the prompts.
Thanks for the info. Now I’m more confused. How do I “use” my tactic. It’s 4 of us in that lane and 3 different paths/champ gates. I’m using doom.