Yashar_Red: I had previously seen the pack on Baer's YT video and was really confused by the end. Turns out it wasn't completed back then. Playing it now, I was incredibly impressed.
Almost every level has a new and unique puzzle. Many of them taught me new things about Spelunky (Even after playing regularly for 2 years). While a few levels dragged or disappointed, the package as a whole is pretty mindblowing. Plus I loved, LOVED, 3-2 and the clever nature of their puzzles. Also enjoyed 2-2 and 2-3 (The rush to escape alien targets).
Must also mention the simple but beautiful visual touches to all the levels that give each of them their unique flavor. Awesome.
MithosFall: Well, you wanted me to review your level pack, and here it is.
What I disliked
----1: At the end of 1-1, I'm not a fan of the Spike Balls. Even though it's not TOO difficult to get past them and you give alot of health before it, it's the pseudo-RNG factor of it. The only time I'm OK with Spike Balls is like on 3-2, or when they're used in a puzzle.
----2: At the end of 1-2, the bats were easy, but I still advise against the notion of "here's a bunch of enemies, deal with them!" Also, although Vlad would have been easy to kill with the Machette, I didn't know it was up there and it would have been a pain to get it. So I killed Vlad using my whip, which took a while.
----3: I carried items past the levels they were given, including Vlad's Cape, the Machette, and Climbing Gloves.
----4: Obstacles that can kill you if you make one mistake can be "the wrong kind of frustration", as I call it. Especially if there are more than one in a single level. Including many obstacles on 3-4 and items bouncing on bounce traps that stunlock you.
----5: Some of the tougher challenges are placed at the end of the level. If you make it through a level just to die to bullshit at the end, that can cause more of "the wrong kind of frustration".
Upon completing all of the levels through 4-3 (with 3-4, it annoyed to the point where I just edited a path past the first half of the stage), I got to Olmec, and then I just had to stop. I didn't have the willpower to try to beat Olmec. Though I don't think that's a problem with the level pack.
What I liked
----1: I really enjoyed how all of the levels looked. It was very satisfying as I was going through the levels.
----2: I liked that the levels were difficult, but still possible to me, which means possible to most players.
----3: There are alot of puzzles and they're really creative and well thought-out.
----4: Basically everything except what's in the "What I disliked" section. lol
----1: Put the more difficult or annoying parts of each level at the start of the level. This is to mitigate the frustration that it causes to the player.
----2: If you're going to have Spike Balls as an obstacle, don't make them too difficult to get through. And giving a ton of health is not a good replacement for that.
----3: Having a ton of enemies as an obstacle is usually (but not always) not very good design.
----4: Ensure that if you give a passive item, that it's meant to be used on all levels past the level you picked it up on. Either that, or implement a way of getting rid of it.
Again, despite the flaws in this level pack, I did have fun playing through it. I wouldn't have played through level 4-3 and given it 4 stars if I didn't enjoy it.