v.00002 Update: 

Cleaned up hitboxes on the melee units (they miss a LOT less now), as well as added ranged units in - and ranged attacks for the player. There's a lot of fine-tuning, but the game is a good bit more difficult with those pesky ranged mice in it. 

Additionally I added hazardous terrain - the placeholder "lava" will now hurt anyone standing over it, and the new "water" tile will slow everyone down by half inside of it. 

Ranged attacks will go through the new box tiles, and be stopped by the brick tiles.

Next update will likely include some new tile assets to make the world a bit more spruced up, even if they're rough placeholder sprites like the rest of the game. Then on to bosses before we dive into better path-finding AI for all!