This will, of course, be a PERSONAL opinion, BUT it seemed to me that all the parts after the first one are garbage, and now I’ll try to explain why.
The first part was the developers' first attempt, BUT it was concise and meaningful, which is why the game didn’t get boring and could be completed fairly quickly.
The second part is more serious, but at the same time, it (practically) has no connection to the first part—no conspiracies, no experiments, etc. The creators came up with a NEW story, with new characters and a NEW plot, diving into some kind of mysticism with artifact hunts. While the PLOT might have been interesting, it was VERY tedious to play, especially the parts with running back and forth. Essentially, because of these fetch quests, I barely managed to finish it -_-.
The third part I STILL HAVEN’T FINISHED because it infuriated me with its running around through unrelated locations, a STUPID plot, and yet another replacement of characters with completely new ones, along with more mysticism. As a result, the third part turned out to be THE MOST TEDIOUS for me.
The fourth part (as far as I understand) isn’t much different from the third and essentially follows the same principle. I don’t know who enjoys this kind of storytelling and character presentation, but I don’t like it. Especially when the game’s runtime is padded with useless actions.
In conclusion, it would have been better if they stuck to making simple, short products like the first part, because this game is trying to be a COOL (on the level of) AAA product, but it’s not, as (starting from the third part) it incorporates all the worst elements. I supported the developers and BOUGHT THE GAMES ON STEAM, but I’m afraid I won’t buy the fourth part...
Despite this, the game still has one of the best animations and good character designs, but that's where the pros (apparently) end.
