Gameplay wise:
I thought it was funner to play than the main story, the controls seemed better and had a few more mechanics which I wish they could have expanded out a little more. (oh no this room is dark and I need night vision, at least there's a pair of night vision goggles right here)
Story wise:
What story? This was more of a overtime mode for the main story and just had the character Chris redfield in for the sake of inserting a character from the past.
This didn't really give any worthwhile Chris story and also didn't really give much else to lucas except that he's a serial arsehole (shocking)
Length:
It took I think just under 2 hours for me to complete with a couple of deaths. I think it could have been a bit longer though to make the new mechanics a bit worthwhile.
Enemy variations:
Though there was practically two enemies only, there was a nice amount of different molded variations and a boss. I think this dlc has more enemies than the main game
New items:
Chris had access to a Shotgun, Handgun and different nades.
All of these excluding the hand grenades felt powerful (Shotgun was sexy and devastating af) I had to use alot of grenades though more so for the purpose of keeping the barrage of enemies away from me, especially when mixed with one of the new white molded (which can't be damaged without the use of new ramrod rounds) the hand grenades didn't seem very powerful so I mainly used these for secondary stun grenades.
Oh he also had a flippy knife which was fun to flip, didn't do much damage but flips!
Verdict:
If this came out when originally planned when the game was still fresh I would have given this a pretty neat score, but I think the delayed delay has affected the appeal so I think I'd give it a 6/10. Mostly for the gameplay, the fact it's '' chris'' didn't really do much for me since I'm still sort of like "why?"