*NO SPOILERS* Since I don't think I can write a review on each season, I will make a review for each season in this one review, starting with Season 1, of course. (Also expect a lot of typos because I'm tired and this review is over 1000 words long)

(TLDR for each rating of each season at the end of the review)

Season 1: An unexpected hit

The start of the show. The set up for what's to come, and it's the second best season of the show. The atmosphere is creepy and unsettling, but it's not all too grim as actually funny humor is able to prevent the show from becoming too bleak. The plot is simple and easy to follow, but it doesn't feel like it's trying to be overly simple. Simple plots aren't always a bad thing, and this is a great example. The mystery builds up throughout the show making you wonder what the truth is, and it keeps you second guessing yourself. The acting is superb, and that's a common trend throughout the show. Almost all of the characters are likeable and don't feel one dimensional. The buildup is slow and it works. It doesn't feel drawn out, and nothing feels like it's meant to be filler. Everything feels like it has a purpose in the grand scheme of things. The tension is really good even though majority of the protagonists are children and you doubt anything bad is going to happen to them. The cgi is a bit rough when the Demogorgon is shown in full feel, but aside from some other problems this season is amazing. An easy 9/10.

Season 2: More of the same

So much hype. And for some it lived up to that hype, but for others this season failed to meet expectations and was disappointing. I can't fully say if it lived up to the hype for me because when Season 2 started, I started Season 1. But even though this Season has flaws, which we'll talk about, it's still fun and enjoyable, and adds to the foundation of Season 1. This Season had 2 big standout flaws. First, it felt like too much like a rehash of the first season, and 2nd, the "The Lost Sister" episode. Starting with the first big flaw, I think it's a fair criticism. Once again Will is the target of the villain, but instead of the villain being the Demogorgon we get a brand new big bad, The Mind Flayer. An interesting villain, and something we see turn into a very big character throughout the show, but let's not get side tracked. Nothing really in this Season felt different from the first aside from a couple of new characters. Those characters are, Max, and Billy. Both are great characters and play big roles in the show. But the reason this Season still isn't hated or viewed extremely negatively is because the first Season had such a winning formula that fans weren't unhappy with more of the same, and I understand that. But no amount of good formula can save the episode titled, "The Lost Sister." What a terrible episode. It added very little to the story, was boring, had uninteresting characters, and felt unnecessary. We could have gone without this entire episode and the show would be the same. But this Season overall was still pretty fun, and enjoyable. Overall, it's a 7.5/10.

Season 3: Oh boy where do I start?

Ugh... This season. It could have been really good. That might be one of the worst parts about this season. The visuals, colors, and vibe was great, but nearly everything else was not. The story makes no sense. I'm just going to get that out of the way now. Massive plot holes. It's the 80s and no one in a small town in Indiana notices the massive Russian base underneath the very popular mall. How? Who knows? The design of this base is terrible too. Why does it look like it was ripped out of a canceled Spy Kids movie? The plot wasn't very interesting either. The whole "Flayed" plot was boring and uninteresting. The way the "Flayed" act is so dumb and unoriginal. They're basically zombies! The Hopper and Joyce storyline wasn't very good, and Alexi is an overrated and a lazy character. Giving a character one trait that makes them "funny" doesn't count as a character. And the humor is also pretty bad. Little jokes are funny, and the jokes happen too much. It also has a Terminator knockoff for no reason, and the entire story is extremely predictable. The massive tonal shifts don't help this already mediocre season. Whos idea was it to have a "funny" comic relief scene cut to a torture scene? It's so out of nowhere. This season isn't all bad, and it introduces one of my favorite characters, Robin, but the cons outweigh the pros, by a lot. The final episode isn't too bad though.

Sadly, this Season is a 5.5/10.

Season 4: Back on track baby!

This Season is great! It has the best moments of the show, best episodes, best villain, best story, best mystery, best action, and best cgi. Also the best soundtrack. This season starts off slow, and has the longest episodes of the series, each being at least an 75 minutes long. The tension is high in this Season, and so is the fun. Max gets a great character arc, and Vecna, the new big bad, is the best villain of the show. His origin and story is so interesting, and his way of killing his victims is... Chilling to say the least. I feel like I could talk about this Season forever so I'll keep each topic short-ish, but this Season tops Season 1. It brings back the perfectly timed humor and exciting mystery but cranks those up to 11 (no pun intended.) The episodes don't feel overstuffed either, instead they take their time, and build things up slowly. Even though all of our main characters are split up around the world, each group's story feels fleshed out and well balanced with the others. The best story is the Hawkins story, but each has their own pros and cons. This Season also introduces an amazing new character, Eddie. This dude rocks! What a great character. So likeable, but he isn't just in the show for comic relief. This season is also the most intense of the series, and has the best writing in my opinion. Season 4 was split up into 2 parts/volumes and it really only built hype. We didn't have to wait long for Volume 2, and the ending of Volume 1 was great. The acting from the old cast, and the new, is the best of the series, and overall amazing. The visual effects hit an all new high and the high budget was worth it. This Season tops the first, and is the best of the show. 9.8/10

Overall this show is amazing, and even if not all the Season are top tier, its still a classic, and I can't wait for Season 5.

TLDR: Season 1: 9.0/10 Season 2: 7.5/10 Season 3: 5.5/10 Season 4: 9.8/10.