Thanks for the feedback!
About the tutorial, the message actually tells to go there and press enter button... should it be more clear?
About the spikes you mean that they are placed in unreachable spots or that they are placed in spots that appearently the player is not supposed to have a reason to pass from there?
The thing of the dog actually it's not a bug: enemies in dungeons are actually representative of a battle formation, which means a pack of enemies, so 1+ enemies