I used to be pretty biased against Ren'Py to the point where I actively ignored them, because I assumed they would all just be standard CYOA visual novels. Granted, most of them very much still are, but I find myself being continually impressed by how much creators can do within that limitation. It's gotten to the point where I think most of the best games on this site are made using Ren'Py, RPGMaker, and Twine. When I think about it, this makes sense. The easier an engine is to use, the more productive its users will be.
Anyways, the Pilgrimage is a fanfic/parody of Mass Effect where you play as Tali trying to escape a ship where a bunch of horny Cerberus experiments have gotten loose. You basically explore a set of various locations to collect items and play minigames (combat + puzzles) in order to advance the story. This game has the classic problem many coomer games have had where the player is incentivized to intentionally lose encounters with enemies to access much of the h-content, but I don't think players are really going to be super bothered by this aspect. Many players are used to this gameplay and I understand that requiring the player to win in order to access the h-content would fundamentally change the kind of fantasy the creator is going for.
The Tali model is pretty good, and since the Mass Effect creators kind of half-assed their depictions of what Quarians actually look like underneath their suits I think this game's design for Tali's face is pretty good. She sort of looks gothy with purple makeup which is a look I think a lot of players would like. The animations are fairly decent, and when you take into account the sheer number of animations and 3D models in this game it's actually fairly impressive. Thing is most of the animations involve monsters with cartoonishly giant dicks fucking hot girls/futas, and if this isn't your jam then you're going to be sorely disappointed. A lot of the monsters are actually kind of horrifying to be honest, and there are some scenes that are legitimately scarier than anything you see in most horror games on Steam. Fortunately the scares are followed by cartoonish fucking, instead of the expected gore (this game still has some blood on a few dead bodies). Overall there is a ton of content, and it's pretty well spread out throughout the various locations which you can visit again as the game progresses to find new scenes.
Unfortunately, this is still a Ren'Py game, and so the combat and dungeon (vent) crawling parts of the game feels extremely janky and repetitive. I understand that the combat and exploration segments have a fair amount of h-content scenes to keep the dopamine levels up, but once you've seen the scenes it just feels very grindy. The character writing is actually not bad at all which is pretty rare in h-games. Not a ton of backstory but a good amount of effort was put into the existing interactions and dialogue, which is reminiscent of how the original series dealt with side characters. The author definitely has a lot of love for the original Mass Effect series and it's reflected in the writing.
Overall a pretty solid game with a ton of effort and heart put into it by its creator. The RPG elements are pretty forgetable but as a visual novel it's very much one of better ones you can find.