Rating: 6.5/10
Potentially an 8/10 with a remaster.

PROS:
- Incredibly atmospheric, with magnificent visual design and art style that catches your eye.
- Excellent sound design
- Puzzles are - for the most part - very well designed.
- Ideal length

CONS:
Limbo feels a bit unpolished:
- There's a lack fundamental settings, such as keybinding, sound and basic graphical options like resolution. Why are Chapters not titled in the menu? Revisiting a specific Chapter can be irritating as you have to do a visual head count to see where in the list Chapter 29 is.

- Various cracks in design start to appear in the third act (Chapters 30+). Despite Limbo having a linear left-to-right progression, in Chapters 30+, backtracking suddenly becomes an element. I got stuck a few times because I didn't know I was supposed to go back from where I came. Some puzzle elements also weren't distinct from background artwork, also resulting in becoming stuck as I didn't realize something was a part of gameplay. Solutions also become less about thinking, and more about executing perfect timing and movement, although this is not so much of a Con as it is matter of personal taste. Still, the shift in design was noticeble.
Point is, none of this was a problem in Limbo's first and second act.

- Limbo has incredible potential for music, but the devs rarely use it. Often times there's no particular reason why a major music piece triggered or did not trigger. If, at one point, music triggers during a big puzzle sequence or a transition into a new area, why doesn't that rule apply to other sequences or area transitions? This randomness gives the impression like music ran into budget or production issues.

- As much as I appreciate the abstract nature of the story, maybe they could've added just a little bit more meat to it. There's a fine line between intentionally keeping your narrative vague/artistic and using that as an excuse to avoid putting in minimal effort.

A lot of these issues can be resolved with a good remaster.

This is the first time I'm ever writing a review for a game, so here we go.

In general, if you love XCOM and have played the first two, by all means, do not hesitate to purchase Chimera Squad once it's patched and a few mods are released. However, keep in mind that this game is meant to be a testing ground for new mechanics, and the entire "XCOM experience" is very streamlined with the purpose of getting you to play with those mechanics as much as possible. Hence the low price.

But if you're a new-time player, I genuinely can't recommend CS.

Pros:
+ The new systems, breaching and "interleaved turns", are a very welcome, and very positive change. They shake up the existing formula and make the combat fast, chaotic and action-packed. It also gets rid of unintentional "pod aggroing" and other frustrations from previous games. The vast majority of your gameplay time will be spent in combat, and I can happily say it rarely ever gets boring.
+ Pre-made characters were pretty good. While there's no dedicated character development, each character is different and has a unique personality. You can learn a lot about their past and what makes them tick by listening to their interactions, and you'll bond with them over the course of the game much like you would with your own characters in XCOM: EU and X2.

Cons:
- The number and severity of bugs borders on AC: Unity. Crashes on enemy spawns, or just at random points. Overlapping and occasionally unresponsive UI. Missing text. Cherub being unable to move. Self-multiplying items. The game sometimes plays dialogue and shows UI for characters which are not in your squad. Animations are all over the place. I could write an essay on the number of bugs I've experienced in my 38 hours.
- Lack of customization. As stated above, pre-made characters are fine, but why take away the option to customize the armor? Not to mention that there is NO visual difference between the weapon and armor tiers. Unless you get an epic weapon, the gear you have at the start is visually the same gear you'll finish the game with.
- Removal of basic features and mechanics. Can't expand my squad size? Downed squadmates magically teleport back to the base healthy? No fatigue? Inability to fail missions? And so on and so forth? Get outta here, Firaxis.
- Immersion and quality downgrades. This is a 10 or 20 dollar game, and it's clear it had a lower budget. Reinforcements spawn out of thin air instead of dropping in via a rope, there are barely any CGI cutscenes, small variety in combat dialogue, etc.
- Mediocre UI design. The game doesn't do a good job at explaining things to you, and you'll probably misread or misunderstand something and then be confused as to why something else happened. Examples are selecting a Dark Event, Verge's "1 turn stun", Cherub's Phalanx, etc.

Optimization
+ The game is actually really well optimized and has lower system requirements then X2, despite being 4 years older. If you ran X2 fine, you'll run this even better.

Narrative/Story:
- The story is average, with an average and easy final mission and average ending. Do not expect anything as good as X2. Voice acting is fine, but most aliens do not sound alien at all. In fact, they don't sound like normal people either. Instead, you get the "over-exaggerated high school cheerleader from a teen show on Nickelodeon" type of acting.

Some VO such as for Torque or Verge is way out of place too. But seeing as this is my personal dislike and not objective criticism, I didn't place it under Cons.

General:
Chimera Squad is a testing ground for new mechanics and features, and nothing else. And that is reflected in it's price tag, quality, budget and game design. It's not a bad testing ground, and as far as I'm concerned all of the new mechanics are a glowing success, but the lack of basic features which we've grown used to in the previous titles, as well as a plethora of bugs, force me to recommend this game only to the hardcore XCOM fans.