TLDR: Fantastic experience! Worth every penny!
It lacks nothing. It has new and fun mechanics, new bosses (one of which we all sulked over for not having in the main game so it was a great surprise), great performances and an interesting new look for some locations.
This DLC made me completely reconsider the way I look at this new Ada and her VA. I was genuinely disappointed with Lily Gao the first time I played the remake. Her performance sounded weak and bored. However, in this DLC I can see her potential and how she's slowly growing into that role. It will take some time, but she is absolutely capable of becoming a new fan-favorite Ada Wong. I have nothing but positive thoughts on this DLC and for this price? I feel like I robbed them.

TLDR: Fantastic experience! Worth every penny! It lacks nothing. It has new and fun mechanics, new bosses (one of which we all sulked over for not having in the main game so it was a great surprise), great performances and an interesting new look for some locations. This DLC made me completely reconsider the way I look at this new Ada and her VA. I was genuinely disappointed with Lily Gao the first time I played the remake. Her performance sounded weak and bored. However, in this DLC I can see her potential and how she's slowly growing into that role. It will take some time, but she is absolutely capable of becoming a new fan-favorite Ada Wong. I have nothing but positive thoughts on this DLC and for this price? I feel like I robbed them.