Sure, I can give you an answer but I'm afraid it won't help you much because I think we have different characters ;)
The only reason I play games is that they entertain me. But there are a lot of ways they can achieve that. I love reading interesting stories, unusual settings, beautiful visuals, innovative gameplay mechanics... it's fun. But when I get stuck one more factor appears: a challenge. Then my attitude changes quite drastically: I start to treat a game as an elaborate riddle created by someone for me to solve. Then I try to use my brain to solve this task and in most cases it will. It gives me a lot of pleasure but not without a cost: it's completely immersion-breaking. I immediately stop enjoying story/settings or whatever else. My attitude is very cold then, I have to be above the game to solve it analytically. At that moments I'm not thinking "hmm... action A seems to be a logical solution because it fits nicely to this universe" or anything like that but rather "solution for my problem was created by a human so it can be solved by a human". I'm not thinking what is logical and what's not but I try to think what somebody can come up with. So yeah, it's absolutely immersion-breaking. But it does work in most cases. And it's not as bad as it may seem - sure I lose some fun but I'm still getting it but in another form. I still feel entertained after solving something difficult.
I'm not a masochist though. There are some games I finished with a help of a walkthrough or even cheats. 95% of those games I consider to be bad so I didn't feel entertained by them so I used a shortcut to get them finished fast and I'm not even ashamed of that. I refuse to play anything that do not entertain me and in those cases I don't even get any fun from the challenge factor. There are some exceptions, for example Discworld. I loved this game but I had to use a walkthrough. Why? Because I didn't want to lose all story-related fun as I expected it to be greater than challenge-related fun.
And you have to remember that I'm not a completionist. I only care about being entertained. Let me give you an example: Anna Extended Edition, a game which can be very hard and extremely illogical. I've finished it without a walkthrough and had a blast playing it. Did I get the best ending? No, of course not. Did I learn everything I could from the game? No, of course not. But I don't see myself playing it again because I wouldn't get much fun out of it so I'm satisfied that I've already finished it. Case closed ;)
So yeah, I can assure you that you may solve a lot of problems when you are not immersed in a game, your brain will work so much better then. The question is: is it worth it? For me - yes, I still have a lot of fun. But I would never recommend it to anyone because I think a lot of people value immersion.
Gede: Not in.
But, WOW, that *IS* impressive!
How long did that achievement it take you? And how many hours do you play per day/week?
I don't have half as many games as you, and I don't even know if I'll even *play* them all at least once! :-(
Something around three years. But it's hard to say how many hours I play... I really don't know. I guess it would be roughly one-two hours per day on average. But I'll say once again - I'm not a completionist and I don't "test" any game, I'm not trying to fool around and see what's what. I try to get into the main story immediately.