Pros:

Looks exactly like Minecraft, all the blocks, doors, etc.
in the nether, Soul sand REALLY makes you go slow instead of just a show of.
MINECRAFT MIXED WITH L4D!!!

Cons:

Random Herobrine pops(not jumps on screen, just you might turn down a hall and he is at the end) and he dont do anything. thought he would be like, a boss or something.
Nether puzzle with the Lava barricade is really hard, took me about 10 mins to solve.

Conclusion:

in conclusion, this is a great campaign. Could really be better if you had to fight Herobrine at the end, but sadly, he is just a guy that follows you and does nothing at all. and puzzles were challenging. Keep up the good work tho.

Pros:

cool idea, and is not too hard
 Portal and L4D combo

Cons:

Should be a safehouse after each challenge, because i got to last one and failed and had to start the dumb cutscene all over again

 People talking in the game are hard to hear(GLADOS, scientists, etc).

Conclusion:

In conclusion, this game/mod is great to learn how to be masterful at witch hunting. but the actual game is hard and if you die you have to respawn at the VERY beginning and go through everything again. it gets annoying. but a great game and idea