With tags it's good to think about "who will like my videos?" and "what will they be searching for". Remember NOT to mislead tags and this can hurt your videos ranking. Now, I like to split tags up into four different types of tags, and I recommend using them all:
-Specific Tags, for this video would be words like "chapter 1", "evil", "within" etc.
-Compound Tags. These tags are several words in one tag, like "The Evil Within Playthrough", I copy and paste the entire title.
-Generic Tags are tags you would use on most your videos like "gaming", "lets play", etc.
-Also I recommend Misspelled Tags. I use this one a lot because my channel is branded as Derral Eves... so I use tags like "Daryl" and "Eaves" so those people looking for my content can still find me. So tag a few commonly misspelled words as well, like how you did "let's play" on one and "lets play on another.
According to my list you are doing pretty well.
If you have more questions about these different tags, I do have a video on it that might help. Good luck tagging!
No problem dude! It's nice to know that you're doing something right so keep up the good work 
