Thanks for trying out our game !!!!
If you want a bit of challenge, the highest score we got during the playtests was 58!
It's a feature that the games tend to feel like they "don't respond fast enough" as you dig up more and more riches you are slowed down and a delay is applied between each movement, so you need to be strategic about which grave you dig up while keeping the keeper at a healthy distance, the keeper only gets faster than the player around ~55 riches (score) IIRC
Graphics-wise this was definitely the vibe we were going for with the tileset! We plan on making the artstyle more consistent in the future too!
Thanks for this comment, Your feedback is greatly appreciated !!