A word of advice to you and anyone else who happens to read this: if you feel you need to apologize for being too cruel in your feedback, it's because you were too cruel in your feedback. With what you have written here, this is often because you say things that provide no value except to make me feel bad. For example, you correctly identified that I used too many common events, and you provide genuinely valuable feedback about how I could fix this issue. However, you weaken this feedback by saying things like "you have to be more rigorous" or "[you lack] mastery of your tools and troubleshooting solutions". I'd like to ask you, what value should I gain for those statements? From my perspective, they only serve to put me down. All you're doing is calling me a dumb-arse. The lack of bug testing was a given, I've even said that there wasn't time for any, so what value did your feedback gain from mentioning it? Your ability to identify the problems with the game and how to solve them after playing for a few hours clearly implies that you know more than me. You don't need to explicitly say it.
I'm, assuming (or at least hoping), English isn't your first language, so no offense taken. Writing all that feedback coherently is extremely impressive. I say this because the line below doesn't apply as much to people who are writing to me in a foreign language, as I respect the struggle of trying to find the words for the words you're trying to say, but I still feel that, in general, the sentiment still stands.
I write the following while knowing it is cruel because I am tired of reading feedback from people where they say some extremely mean shit and then go "Sowwy, didn't mwean it :3," because you absolutely did asshole, you wrote it that way. You should consider if you need to point out the things that are bad, as usually you can just point out what is good and how to make those parts better. If you feel the need to point out the bad things just point them out, say why they are bad, and what would make them better. The goal is to criticize the craft, not the craftsman.