USE TURBO MODE! (shift+click the green flag) WASD/Arrow keys to move. X and enter a number from 1 to 5 to directly select a tile. Z/C to change the selected tile to the previous/next one. Click a tile to change it to the selected one.
Walk Walker, assuming I don't give up halfway through creation, will come out at some point in 2020. Everything to the left of or below the "spawn point" is tile one and is not editable. Change log: 12/24/19 - Beta 1.0.1 - Tiles split into editable triangles to support future walls, art made 40% more pointless 12/20/19 - Beta 1.0.0 - Game released with scrolling, five basic tiles, and simple editing