Yay, I started working again on SpaliendeR a few days ago. I am making good progresses, and I learned a bunch of very useful stuff.
I finally understood how to use the with command, and above all how to make for loops.
What I have so far is a quick mode, kinda like a tutorial, and a dozen of level for the infinite mode that are randomly chosen. I also created a bulletproof alien that need 2 shots to destroy, and an egg object that will spawn random alien after a certain time.
I can also control if the spawned alien will be a bulletproof one or not. Thanks to that, I can now create levels that are a little bit more evolved with some strategy thinking in order to complete them.
I still have to implement various bonuses, and I would like to create a final boss.