I tweaked the checkpoints in the last room. There are a few more and you now get a message when you hit a checkpoint. The treasures should be a little easier to spot and reach.
Update 2.1 Updated to minecraft 1.19 and fixed a few small bugs. Current level is now shown and a hint is given when you overlooked something. ImpressionPost your thoughts, problems and playthroughs here! Questmakers love to hear their players' voices. You could also send a personal message to the questmaker!