The Good:
-Art is nice, especially for a starter project. I'd agree with the other poster to do something to avoid the DAZ grainy-ness, though I don't know what caused it
-Concept is fun and unusual
-Game is funny, but I'm not sure if it's supposed to be. I couldn't tell if the "Yeah boiiii" when winning combat should make me laugh or cringe.
The Bad:
-Writing is full of typos, and if it's not supposed to be a parody adventure the writing is very poor. I'm guessing you aren't a native English speaker which is fine, but I would recommend a proof reader.
-Art has some of the classic mistakes where the backgrounds are overly detailed or don't exist at all. It's really jarring when you go from a cut out image (like the helping with archery) to a full background (breakfast). I would push for one or the other. It's a lot of work to make good backgrounds.
-Mapping is plain and boring. Environments are boring. Would recommend a bit more time making the town look more interesting than the generic RPGmaker default village.
-Also with mapping, some screens don't need to be nearly as large as they are. I'm thinking of the basement and the forest outside of the cave primarily. Just huge maps that are completely empty, when they could be tiny and get the same feeling across.
-Event triggering needs work. The one that I hit the most is going up stairs "I need to be sneaky like a goblin oh yeah I am a goblin" and then if you happen to take a step backwards you see it again. More triggers to only play some of those dialogues once. You could also trigger the scene for both daughters of cum in their food by doing it to just one of them.
-The story is bad. And I'm not saying the idea of Goblin going into town is bad, but the instantly corrupted Mother character and strange BDSM sex-rack that is just randomly fully operational in a nearby cave is. The whole scene going down to the monster league doesn't fit with the story at all. Is it supposed to actually be Ciri and Triss? Why are they there?
-The sex-rack made the least sense to me entirely. He put her in this contraption once and it solves everything suddenly?
-Why are there like four villagers? Why are they all standing outside their places forever to tell you no?
-Way too much use of "wait three days" where you had to try and do the same event four times to get anywhere.
Anyway, has some promise and good art. You need a more firm direction of the game's path and a more cohesive tone. Is it a silly parody of fantasy games, or a more serious corruption 'simulator'? I would say focus on your good art and reducing needless running around.