Just to be clear ...
Is this one of "i write a fanfiction" or "i tryed tabletop session" topics?
Or are we talking about actual game experience from that game? O_o
Yes. Yes to all the above.
While writing my The Afflicted fan fiction, I played it through via Tabletop rules with genuine Tabletop stats for enemies, etc.
I also have played through this fight in the video game many times. It is one of those fights where you have to start over from your last save a lot depending on RNG. Unless, of course, you know what's coming and position your party on the gate so you have high ground.
So, my point is that the battle is too tough for 4 level 4 or lower characters no matter what way you slice it unless you use height advantage. 9 times out of 10, in the video game, the Gith will Misty Step to the high ground and hit you multiple times in one round, effectively reducing your characters to nothing before you can even get a chance to get to high ground.
But even with Tabletop rules, it's a brutal battle and way too hard. With Lae'zel and Gale and a Ranger and Cleric of Life Domain, they barely won and only because I flubbed a few rolls.
So, my verdict is:
1. Increase party size to 6.
2. Add more roadblocks to prevent players from getting there until level 5 at least.
3. Make the Gith battle worn. In other words, decrease their HP by half so they are weaker from having already been in some fights. Not every enemy is full health when you fight them.
One of these, at least, would likely fix the issue.
