Great game!
Some feedback on things I noticed:
- At some point, the railroad tracks started appearing in every level
- I presume the exclamation means there's an event/guild unlock. I couldn't get this to trigger on Zone 1-3.
- Pressing 'Esc' seemed to end the round early once, and never again.
- The grind for gold is pretty tedious! Might be worth clarifying that 'Overflow' for Hermit doesn't include Gold.
- Might be worth preventing Crystal from dropping with 'Overflow' until there's a use for it :).