Black Mesa: Definitive Edition - 10 - Residue Processing [Hard]

Chapter 10: Residue Processing

Freeman wakes up after being apprehended by the HECU to find himself at the bottom of a trash compactor, stripped of his weapons. He manages to escape before it crushes him and emerges outside to a sunny morning in the facility. However, this moment of respite is short-lived, as he must venture back into a waste processing facility to make some headway and pick up the trail to the Lambda facility. Gordon slowly re-arms himself as he runs, jumps and dodges his way through the dangerous (and oftentimes gross) hallways, machinery and conveyors of the processing plant.

Playlist with all completed chapters:
   • Black Mesa: Definitive Edition (Full ...  

Notes:
Though it is difficult to do, Gordon can rescue the Guard at 3:50 before he gets grabbed by the Barnacle, either by getting grabbed first and killing it, or by throwing a prop at the tongue. If the Guard is saved, he will act like a regular Guard and follow Freeman around if requested, though he will eventually need to be left behind at the ladder
The Headcrabs at 3:50 will die if they land in the radioactive waste that lines the room
It is not required to shut off the gas line at 5:27; Gordon can actually go right through the flames at the vat of goo with minimal damage
I didn't bother exploring the areas at the bottom of the huge conveyor rooms because there honestly isn't much of a reason to; they mostly serve to allow players to return to the start of the conveyor maze (the orange door at 14:00 opens from the other side when players make their way back up) if they fall off at the grinders jumping puzzle and land in the water at 16:59. There is hardly any loot down there, but players will encounter a dead Security guard besides two headcrabs, and a Bullsquid on their way back up
The flame puzzle at 15:33 is notoriously hard to get through unscathed because the timing on those jets and the AOE of the flames are just plain unfair. I myself only recently found out that I could get through it by walking on the side of the conveyor and going step by step through each set of jets
The ladder at 16:03 leads to the bottom of the conveyor room and simply allows players to come back up if they fall
For the grinder puzzle at 16:43, instead of jumping from one belt to the other, Gordon can simply use the steel beams to walk from belt to belt
At 16:55, two openings are seen. Both lead to the area at 17:12

Trivia:
As seen at 0:04, all suit armor from the previous chapter seems to carry over, even though Freeman's health took a hit from the HECU capturing him
In HL1, interacting with the crushers at 0:38 will allow Gordon to control them just like the trams in OaR. This is not possible in Black Mesa
At 1:01, a gas tank with "Northern Petrol" written on it can be seen above the trash compactor. Their logo is also widely seen in the chapter Highway 17 in HL2, specifically at the dock where Gordon controls the crane
It is implied that the two HECU soldiers that captured Freeman died right after they activated the compactor; one is seen blown to bits (presumably by a grenade) and the other has been overtaken by a headcrab (1:04). Many dead Headcrabs are also seen, suggesting that they teleported into the control room and a fight ensued
Gordon will suffer fall damage if he jumps down into the drain opening at 1:48
Many of the doors in this chapter, such as at 4:58 & 5:00, used to be orange ones that Gordon could unlock from the other side once he has progressed further into the level, to allow for backtracking. These have been replaced with unoperable doors in the Definitive Edition
The "secret" path that awards Gordon with the SMG at 10:34 used to only contain 9mm ammo and a shield cell
It used to be possible to run through the set of crushers at 13:44 in one go, in previous versions
The soundtrack that plays at 13:40 was used in the first teaser for Black Mesa, as shown here:
   • Black Mesa Official Teaser Trailer  
In prior versions, the direction of the conveyor that Gordon is on at 16:33, and the one to the left of him, were switched, and Gordon had to hop on the other belt to proceed to the grinders
There used to be tripmines at the start and end of the tunnel at 16:35; these were removed because they were notoriously hard to hit. Also, who the hell would've placed tripmines there in the first place? The HECU because they were bored? Didn't make sense