"Tower Of Training" - I'm not sure about this one
specifically as a tutorial level. I was able to solve it using just bashers and builders, for one - I wonder if a tutorial level like this should
require more variety...?
"With Minimal Efforts" - This one, on the other hand, needed a variety of skills and was much better. I do wonder if the end part - especially given that the crowd will likely be coming in quite bunched up - might be a bit tricky for newer players though? My other question would be whether it might be better to allow more than one way to deal with the fatal drop, since most other parts in both of these levels can be approached more than one way and fatal falls are a particularly useful thing to know multiple ways to deal with?
"Blocker Rocker" - I think the "block under entrance / fall, dig later" might belong in Advanced Training, personally. My only other criticism here - and this is more relevant to existing players than new ones - is that the pillar bottoms along the way look, at first glance, like they could be squasher traps.
"Steely Halls" - This level lacks introduction text - but I'm assuming that's just something you're doing with the levels that aren't specifically teaching anything?
"Limited Release" - This level feels a bit tricky for beginner, even if the trick is accepted as a beginner trick, because of how little time is left to release the crowd (or the need to find an alternate way to release them and then free the blocker, which isn't impossible) when the route is completed...
"Reach-Around" - This one, again, feels a bit tricky for a beginner tutorial rank - not the sending a worker around part, but the building inwards from both sides part in the middle.
"It's A Stretch" - The level itself works nicely, but I think each gap can be made 1 pixel more lenient, while still requiring the player to stretch every bridge.
"Delaying the Inevitable" - This one was especially well done IMO!