In the cactus level, you have to proceed without hitting a single cactus. The people in the guild tell you this. I did it by only using the healer after progressing past it a free levels. You can die at the boss to end the level and it'll work, if that works. esc is a little finicky.
The other ! is the knight and it'll be a pillar with red particles floating up from it. Takes a few shots. Again, told to you by the people in the guild.
I was in the guild, all they say is theres a knight in the city prison.
I didnt see no red pilalrs or stuff, but after getting the cactus guy, I tried dessert 1-9 witohut anyhting special there and had the knight dialogue this time.no clue what had changed, do you need to find guys in the right order?