Glad someone brought it up here and I decided to look into it, it ain't perfect but it's still fun to mess around with. lol

https://youtu.be/h8WZMGmM2Xk

Made a small video of what I did so far (did add more to it after recording and balanced some stuff out), I did end up figuring out a problem I had with the metal wave. Adding a negative sign to the "Start" column before the number will cause the enemy to spawn later. Hard to explain, but yeah, wanted some enemies to spawn later and stuff.

...Anyways is anyone else messing with this? lol