Hello Joshua
Thank you for your detailed feedback!
The blank tutorial pages are a pretty major issue I thought I had fixed. This bug only appears randomly, and no browser errors or warnings get logged. It's really frustrating. I think I found a solution though. By manually checking the content of the tutorial SVGs, the browser seems to realize when it messed up, and silently loads the content again. But let's not ramble about technicalities :D It hopefully works now.
The tutorial is the part of the game that took by far the most work to do. But I'm not very good with non technical explanations, so it apparently needs more work. I had hoped the animations would be enough, but maybe I need to hire a professional writer...
The 'Block' tower blocks tiles it points at. Meaning if you put it on a tile with an up-arrow, it will block the neighboring tile above it. Since monsters can only move along arrows, 'blocking' here refers to 'removing all arrows', i.e. making the tile impassable.
All other neighboring tiles will get 'unblocked', i.e. made fully passable, i.e. receive arrows in all directions.
As for the HP thing : HP is a mechanic that would get introduced in the 4th tutorial level. It is hidden at the start to make it easier for people without the tutorial to figure out the mechanics. Any solution to the first 3 levels should always result in acceptable amounts of damage for a perfect score.
The problem is, the failure message should preferentially display the 'You didn't take enough steps' message over the 'You didn't deal enough damage' one. I fixed that!
Your solution (top right + top center) is perfect for the first wave. Could it be, that you cleared the first wave, but didn't notice it, and landed in the second one? That one needs 7 steps, and the former fail-message would have (confusingly) been what you described. I have added a 'You cleared Wave X' message to make success more apparent.
Again, thank you very much for your feedback!
Best regards,
Sven