Thank you. Let me make some things clear about this build (*deep breath*). It has a bug with the main boss spawning. The fact is that (as I recently realized) I mistakenly uploaded a build that is several commits behind my final version. And this build does have some missleading in terms of gameplay.
I don’t urge you to rate this project any other way, rate it exactly as it is played, that will be fair.
Now about the gameplay: the ultimate goal is to kill the main boss. You can see it on screenshots. Big dark thing with red glowing core. I confirm that in this current build there is bugs with spawning boss and exchange plasma on tetrahaedron. After reading comments everything became clear to me when I download exact version from Itchio and started playing it. And, well... that was suprize for me. Having discovered the above bugs in it. Since several days have already passed since start of rate, it’s probably too late to be upset about this ;) As I said above, judge according to your experience, I'm not asking for otherwise.