Visual effects such including tweening should be handled on the client not the server but

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#1

But what if someone joins while the effects should be on progress so they did not get the :FireAllClients() but actions are still being performed (character animations, damage, etc) that would indicate an action, but the visual effects are missing? How would I solve this issue?

#2

You’re trying to make it client-sided it sounds like.

Try setting off the tween with a localscript maybe?
Make it so the tweened object is using a server script to damage the player

#3

sometimes you let the server handle i t