Are the grammar mistakes added intentionally to convey an informal register? They seemed quite jarring to me while I was reading it and there were also quite a few spots where I found the phrasing somewhat awkward.
Day 1
"This is the second week in a row that he skips sex.." --> "This is the second week in a row that he's skipped sex.."
"Search the Gift in the Drawer" --> "Search for the Gift in the Drawer"
"He already seen me go in there!" --> "He's already seen me go in there!"
"I hear water... is that you?" -- This, at least to me, sounds really awkward. I don't think I've ever heard someone use the phrase, "hear water". Perhaps, you could use "I hear water splashing... is that you?" or "I hear water dripping(onto the floor)... is that you?"
"I-I'm making a m-mess w-washing dishes!" -- This, to me, sounds like she's intentionally making mess(especially with the exclamation mark). "I-I'm just making such a m-mess w-washing dishes." could be better.
"ook, make sure to mop after..." --> "ook, make sure to mop up after..."
"Now...I think its best to start from the bathroom" --> "Now...I think it's best to start from the bathroom"
"Mr .Mongus?" --> "Mr. Mongus?" -- Misplaced full stop
"At first glance it looks like its twice the size of Phil's" --> "At first glance it looks like it's twice the size of Phil's"
Day 2
"Maybe I need to take them for some time..." -- sounds a bit stiff, "Maybe they (will) need some time to take effect" or "They might need some time to take effect" could be better.
"Todays task: Cleaning the dishes!" --> "Today's task: Cleaning the dishes!" -- Don't know whether this is intentional
"This is the biggest one i've ever seen..." --> "This is the biggest one I've ever seen..." -- Don't know whether this is intentional either
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"I was so close to make a BIIIG mistake..." --> "I was so close to making a BIIIG mistake..."
Day 3
Although this on the surface appears to look like an example preposing("That thing it looks terrifying" or "That bit I can understand"), it's not grammatical here.
"If one a night it's not working..." --> "If one a night is not working"
Day 4
"This pills don't seem to work at all...) --> "These pills don't seem to work at all..."
Oh, and the "promessed" misspelling that other commenters have mentioned. I actually thought that was a cutesy stylistic choice the first time around.
I find this one rather humorous.
"They're very sensible..." --> "They're very sensitive..."
"I think I know what it means for Manual-Release but..." --> "I think I know what it means by Manual-Release but..." -- You could also add quotation marks around Manual-Release
"...on your basement?" --> "...in your basement?"
Pretty sure you don't add apostrophes when there's no contractions. "I-I'am-what?!" --> "I-I am-what?!"
"I don't know what did you do..." --> "I don't know what you did..."
"...if somehow I will be cured from my condition..." --> "if somehow I am cured from my condition..."
"I will let you live on my apartment rent free FOREVER!!" --> "I will let you live in my apartment rent free FOREVER!!"
"Than I'll put my all into it!!" --> "Then I'll put my all into it!!"
"I know what do I have to do now..." --> "I know what I have to do now..."
"Send me the position"??? A what??
--> "Send me the location"
Lastly, there is a misspelling for "pharmacist" as "farmacist" but that seems intentional(?). Overall, a great and enjoyable game!