I knew from the images and videos that I would really enjoy playing this game. And I haven't played it much, but I already have some ideas for improvement to consider. My apologies in advance if any of these are already implemented!
Ability to remove wood blocks/stairs
I get frustrated when I accidentally place blocks - usually just start a new game.
One challenging aspect of the game is that you can't jump (well, there appears to be a jump in the controls, but it doesn't work). By allowing players to remove stairs and blocks, there is no need to jump; the player can temporarily use stairs to build things higher.
Increase speed for gathering resources
The speed is almost perfect for gathering wood blocks and placing blocks. In my opinion, the way it is now slows down game pace. I would increase it a little bit.
Larger maps
You could have the borders of the map expand with each boss battle or something. Maybe some procedural generation of terrain whose variables change based on player performance? I think gameplay would also benefit from being able to mine deeper.
Wandering Merchant
Have the merchant walk off the map every once in a while, that way resources aren't immediately available as soon as the player gets gold from monsters. Additionally, make only certain resources available; either randomized or increase the selection over time.
Additional tiles
I would suggest having some exposed rocky terrain and natural lava flows. Also some kind of metal ore for making bullets and other items (in this case, ammunition would not be infinite).
Graphical suggestions
The pixel art is pretty good, just needs some tweaking. Mostly some work on the palette to unify the different tiles (especially sand and grass) and the sprites. I'd be happy to help out with this. Just contact me about it if you're interested.
Ability to remove wood blocks/stairs
I get frustrated when I accidentally place blocks - usually just start a new game.
One challenging aspect of the game is that you can't jump (well, there appears to be a jump in the controls, but it doesn't work). By allowing players to remove stairs and blocks, there is no need to jump; the player can temporarily use stairs to build things higher.
Increase speed for gathering resources
The speed is almost perfect for gathering wood blocks and placing blocks. In my opinion, the way it is now slows down game pace. I would increase it a little bit.
Larger maps
You could have the borders of the map expand with each boss battle or something. Maybe some procedural generation of terrain whose variables change based on player performance? I think gameplay would also benefit from being able to mine deeper.
Wandering Merchant
Have the merchant walk off the map every once in a while, that way resources aren't immediately available as soon as the player gets gold from monsters. Additionally, make only certain resources available; either randomized or increase the selection over time.
Additional tiles
I would suggest having some exposed rocky terrain and natural lava flows. Also some kind of metal ore for making bullets and other items (in this case, ammunition would not be infinite).
Graphical suggestions
The pixel art is pretty good, just needs some tweaking. Mostly some work on the palette to unify the different tiles (especially sand and grass) and the sprites. I'd be happy to help out with this. Just contact me about it if you're interested.