9.5/10
Doesn't try to reinvent the wheel but rather it takes existing mechanics and iterates and refines them in way that feel very natural, if anything some of its combat refinements are possibly the best in class and that is a tough class given the community output this last few years.
Positives
-The lightning choice is definitely another stand-out and while i won't gush over some impressive new tech its rather how it uses it to set a completely different tone unlike that of 99% of mods based around the base HL story.
-Same for the setting of Delta Base it clearly stands out from the way Black Mesa was designed and not just in its choice of signature colors but the tone and way its layouts are designed, its best experienced rather then talked about.
-Combat is again a stand out , the weapons are still familiar but with choice changes everywhere like: model changes , slightly tweaked performance, ammo, separating the assault rifle w/grenade launcher from SMG , altering alt-fires(i.e. the glock gets a fast three round burst and shotgun can engage full auto mode), and feedback are where it shines.
-Feedback isn't just in the sound and how it feels to fire but particular its the way gore is re-introduced which includes some inspiration from cut models from base HL. Destructible heads and limbs in some cases are in full effect.
-Xen layouts are peak, it doesn't completely change it and make it drag insanely long like black mesa. Rather it reworks it as a concept and makes it fit the tone and mechanics setup in the mod with a couple of really fun danger puzzle areas which i don't want to spoil.

Negatives
Skybox feels kinda iffy at times, some pathing relating to corpses but nothing significant, game often lets you go into an optional area vs a main path of no return but both paths often seem like either could be the main so bad signposting in that dept.
At a few spots controllers may be overused, the mod really seems to like using them and for the most part they work in encounters they are put in, there is plenty of cover and due to reworked weapons several types are much better against them.

Where the game suffers is sadly in the shortness and ending similar to "insecurity" its ends about where i would expect it to have about 30 minutes to an hour extra to wrap things out.
It definitely leaves a "we were starved for time so we pushed it out the door syndrome".

Conclusion
One if not the best mods of all time, i really don't understand how "Black Mesa" mod could be a paid mod when something with this insane level of polish and work put into it primarily by a single dev is free.
It might as well be the worth calling it the Entropy Zero of HL1 mods if not quite there to be put on the same pedestal as the 2nd EZ and that is a hard call given modes in last few years like Echoes, Field Intensity , Insecurity , heck i will even put Diffusion in here with its jank and weird dev fetishes.

I loved this. Beautifully crafted, beautiful story. My only gripe is some pathing issues but who cares, it's one con to an amazing mod. Dev, if you see this, I hope we get to see a sequel to the game:)<3

В последнее время проснулась ностальгия по движку GoldSrc и я решил посмотреть, какие моды на халфу есть в стиме. Так и наткнулся на Delta Particles.

Почему-то я думал, что на харде будет не так уж сложно. Но на деле пришлось сейвиться после каждого боя, так как враги снимают очень много хп. Еще мобы расставлены и спаунятся таким образом, чтобы так сказать, "неждануть" игрока. Постепенно приноровился и сейвскама стало поменьше, но летающие мини-нихиланты и появляющиеся прямо перед харей вортигонты бесили до конца игры.

Так как я в конце уже получил ачивку за прохождение на харде, то решил посмотреть какие еще остались и оказалось что большинство из них легко получить. Но вот ачивка на открытие всех складов сильно поддушила, почти два часа ушло только на нее. Потому что последний склад где-то в 30-40 минутах от предпоследнего.

Сюжет ультра-слабый. Главный любовный интерес героя - совсем не харизматичная угловатая дама в беде. Концовка открытая, больше напоминает прикол. Но это и не важно, игра цепляет другим. Давно не было так интересно играть. Без шуток, для меня этот мод был в десятки раз интереснее киберпука 2077 и его геймплей намного менее душный, чем в рдр2. Вот такие дела.

P.S. На протяжении всей игры мерцают текстуры на стенах, что очень мозолит глаза.