Half-Life : Residual Life mod

Ok, finally found myself what the hell I had to do...

Now I can end this damn thing once and for all.

Yeah, me too, i found the 3 purple cylinders i left: the third, you have to got the secret of the gravity gun (Golden Zero, i don't remember his name xD) and put it in the second map of sun eater's pillar without grab the gluon gun or the gauss gun, where is none charge of the weapons, later a portal is open up and send you to a secret map (rl02z2_dusk) there is the third, the four, in the place we mentioned. The last, where you finally go to teleport to the credits, before down for the elevator, the control room have a corner with boxes, there is the last, but a little invisible. Later, we finally can fight the secret final boss. I defeated already, good luck with you.

The thing i hate is, to fight the secret boss, you have to play in Hard because the door where is the third purple cylinder it can't be open if you play in Normal or Easy.

Att: ElPran68, the same who comment yout video, thanks for help me to open the door where was the second cylinder.

Ok, I found the last of them... But that's just ridiculous, there is no way one can end this without cheating, even without searching for the 5 purple cells, it's godly impossible, too bad because it's the last part and we're supposed to at least enjoy a bit the party...

Nah dude, i passed it without cheating, is only a thing of patience and strategy. The things that i hate of this mod is the female black ops, and the black ops with snipers, they kill you with a only shot, and you can't grab it, it just ammo for the crossbow; and the abuse of teleportation of enemies, and that new vortigaunts added. I liked this mod for that: because is hardcore, i like the games like that, because i don't see much people that liked this mod.

That's some big achievement... Seriously, the fourth purple cell, I had to cheat, not enough ammo, not enough HP... and virtually no supplies around... "Patience" of course could be the key, especially with using HornetGun... But that's clearly an hour long strategy... For my playthrough, I had to cheat several times during Sun Eater Pillar, as you say, for the same troubles you had : black ops with snipers, and teleport of vorts... I'm currently at the Tiny Dwarf, I found how to kill it, I think I can do this one without cheats... Well, you'll see the videos... But seriously, there are really some parts where, you can't take cover, and are continually shot with rockets, sniper bullets... no, really, for me that's too much... All of the mod from intro to Center of All Things and/or Altar of Sacrifice, can be done without cheats, with some training, but Sun Eater Pillar... wow... I think I'll have more videos of this final chapter than the rest of the mod...

Also, I didn't know what to do or where to go with the bonus level so I kept searching for hours for a second purple cell, but there was only one in this level, I misunderstood...

Anyways, thank you for your help, I'm glad some people really tried this mod to the end, it's really worth it, I've discovered it a decade ago and it kept growing...

As translated :

"There are a total of five, and if you miss one of them, you cannot fight another hidden boss.

If you take the elevator from the early sample or waste hangar, you will be taken to the train platform, and you can get one by exploring the area, such as the vents.
After performing chaotic greening among the above 5 elements, it is then reversed to the platform mentioned above. Then some soldiers come out and can open some of the doors that haven't been opened before, and you can find one inside. However, there are a lot of turrets in the purple cell, so be careful.

For reference, if you finish the center of all things in the state where you have obtained both of the above-mentioned cells, it leads to the Sun Eater's Pillar center, not the ending, [9] and the rest here Collect 3 [10]
Later, at Sun Eater's Pillar, where energy-based weapons and uranium ammunitions were placed on each other, placing a gravity gun on the altar at the door [12] without touching anything else [12] yields a portal within it.
You can open a door at the place where the transportation track is located and engage in a battle, and you can get another inside.
After that, if you continue, you will come to the control room where you can see the device that flew here for the first time, and you can get one here.

Once you've collected all five, return to the compartment full of purple lights and fill up the empty slots to unlock the locked door, and go into the hidden and final boss chapter The Tiny Dwarf."

So, if we only take the first two, along with the achievements, it will take us to the sun eater's pillar. But we will have to find out where the other 3 are. According to the demo version 1.7, the third one is after taking the hivehand in a small toxic puddle where afterwards it sparks lots of enemies, of course, Dark, you will understand this if you played that version.

I see what part you’re talking about, it s just after those weird pentacles and the room full of enemies in glass boxes

You don't know at least how to enter in "The Sun Eater's Pillar" besides, the door where is the second power cell, is always closed no matter the dificulty, and i think we need at least three to access to that bonus level.

I think, as I read/translated the wikia, you have to use the gravity gun from the "Dark golden energy" secret on the map "one is all, all in one!", on some kind of altar near that door, one condition is to not touch anything else.

Tell me if it work, maybe you have some old saves, as I'm far from getting to the sun eater's pillar.