> Have you proven that the same tick is the issue? It doesn't sound like it from what you're describing. Use 'enemy on destroyed'.
The setup I use is that on enemy of x color destroyed, another sprite representing the count spawns the next one and is destroyed. Like, at 0 lights on, enemy is destroyed, the 0 lights sprite spawns the one light sprite and gets destroyed. When the 4 light sprite spawns, the combo count goes up, the score increases accordingly and the lights go back to 0. It works just fine but when more than one enemy is destroyed at the same time, only one light changes. As if a single enemy was destroyed.
To check it up, I created a global variable that increases by one when an enemy is destroyed. And while it does increase by the correct number of enemies destroyed, it is instant. Like, destroying 8 enemies at the same time makes the count go from 0 to 8 right away instead of counting from 1 to 8 fast.
I wonder if it could work by using this number for the events instead. Like, when this variable equals 1, make the one light sprite visible. If it's equal or above 4, spawn the 4 lights sprite, do the score thing, then subtract 4 from it. This way if say, 8 enemies are destroyed at once, the count of 8 would spawn the 4 lights and score, subtract 4 from itself and become 4, do the 4 lights and score increase again and go to zero. 9 enemies destroyed at once would do all that and set the count to 1 at the end.
Better if you share the events and tell us what you want. Of course if you use on destroyed then the variable will increase as fast as the enemies are destroyed, if that's a problem then show us why.