How to trigger something after enemy dies?

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A lot of the stuff I know is by trial and error, if I go to YouTube it's to learn the basic of how to use a node or I read into the docs to see if I understand...

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So I have the block volume and the barrier effect appear during a cutscene and then after all 3 enemies are dead have the block volume and effect be destroyed....

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So I tried using the "Get all actors of class" and "length" and I believe I am not using it right since nothing is happening. And...

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One thing that you can do is remove the player start from the level and place a camera actor in the level and set that to auto possession since you have...

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Awesome thanks. I'll have to try these out. Haven't done anything with enemies until now, let see how it goes....

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So I have my set up to spawn in 3 enemy AI's during a cutscene. And in that process I have a barrier that spawns around everyone with a blocking volume....