Mistake Of Pythagoras mod for Half-Life 2

Umm...
what am I supposed to do with the file I downloaded? My computer is just telling me it's a "file", so I don't know what do do with it or where to put it. Am I doing something wrong? Can anybody help me?

keep shooting it from below. It's hard. because there are alot of obsturctions that stop your rockets from hitting, but just keep at it. You'll get a few in eventualy. Aim for the inside sides, there are these little pyramid like things on the inside. Shoot for those.

I found a secret area :D.

anyway, I'm at the part with the floating cylinder-- I keep shooting rockets at it. there was an explosion and the white lights turned green. I kept playing but it got laggy with the zombies repeatedly respawning. Is there something i'm doing wrong? I suspected I should be shooting the thing from below, but I'm not sure. And damn, the zombies just keep spawning. and spawning. I figure they must keep spawning until the game crashes.

on the final puzzle what do i do it is so confusing please help (the puzzle with th floating numbers and the super charged gravity gun)

Game looked great in the city parts, but it makes no sense whatsoever. Massive numbers falling from the sky. And wtf does it have to do with pythagoras? And the bit with MILLIONS of manhacks was stupidly difficult. I can survive, but alyx sucks @ manhacks.

Please explain wtf it was about - doesnt really make much sense.

I love this mod! :) But how in all of reality am I supposed too get passed the flying thing that kills Alyx everytime I try to get past it? :( But I love the mod, and the psychokinesis sounds like alot of fun once I get it :p

#1) Play at your PC's level, what graphic's card do you have, if it sucks quit trying to play the game higher, if it is really sad and you are playing at bare minimum graphics, sucks to be you

#2) The crashes seem to be very very rare, I have expereinced none of the crashes and apparently many tohers haven't either

#3) Having to load the map from console, I have never seen that happen to any mods before, with exception to SMOD which requires the console to play custom maps

If mine can run it smooth being as bad as it truly is yours should too

i only have 1.1ghz processing speed and 512 mb ram but i got no lag or crashes it ran just fine from beginning to end so i guess the crashing problems is unrelated to pc power

my favorite part was the telekinese by far!
tho i wish i had better control of it,
most of the time it was more a burden then a gift, sending every object i look at in random directions
and at me, but when there were no object around to get tosed around carelessly, watching waves of enemys blow up and die in front of you just by looking at them really makes you feel powerful

So a good game. It involves you into a new world of new ideas. So good make up. Only i think the argument could be better. But so godd anyway thanks!

I'm stuck on that map where headcrabs keep spawning, and i have to kill that flying thing. I managed to kill all the headcrabs and the flying thing, but then i couldn't figure out what to do. So, could anyone help me?