Lost in Nightmares provide some spooks and Nostalgic but have a few faults.
The game have a couple of puzzles but none of them are complicated. The spencer mansion really love cranks. I wished they were a bit harder.
There are four chapters during Lost in Nightmares. The first chapter is the mansion which is done well and provide a lot of spooks.
The second chapter is in a dungeon filled with guardians. There more action and the area got some good atmosphere.
The third chapter is where the game slow down. You lose most of your weapons and you kill the guardians using traps. It's boring and slow.
The last chapter is the conclusion with Wesker. The fight is tough but not really interesting.
Lost in Nightmare is very short. Veterans will have no problem beating the game and novices can still beat it in under an hour. The game does differ though. Monsters will spawn at different places and some weapon doesn't even spawn.
The action is quite different. It's more about conserving ammo and staying alive. It's a nice change of pace.
You get a new mercenarie mode called Mercenaries reunion. When you download the DLC you unlock Barry Burton and Excella. There is also a character costume which give you a new outfit for Chris and Sheva. You can use them in Mercenaries reunion and the main campaign.
It only cost four dollers so there's not much to complain about. Other than being short and the third chapter being slow,It's a good purchase.