As you have read before, the low framerates were caused by the AI pathfinding. After hours of work, I solve this, and now the game can handle almost 256 enemies at 45-60 fps - obviusly, this is just for testing, the amount of enemies will be approximately of 45- 64.
If you think this was everything to say on this post, you are wrong. On the next release, I will add to the generator the ability to make rooms - a system that I’m working right now. So I’ll have the next version later than expected.