As mentioned above, the main, well, thrust of today's progress was the implementation of the game's combat mechanics. One enemy-type has been implemented; it spawns automatically into the level and wanders aimlessly--until it discovers the player. Once the player has been found, the enemy heads for them, and on coming within a specified range, attempts to attack. These attacks do significant damage, unless either dodged or blocked. Conversely, however, the enemies take significant damage from the player's attacks.
The light-and-darkness mechanic has also been implemented. The player can raise and lower the brightness of their light at will. Dimming it below a certain threshold allows the player to recover health--indeed, this is intended to be the only means of doing so. Enemies can also lose the player if they fall too far out of the circle of light (presuming that the player moves, at least--on losing them, the enemies go to the last location at which they perceived the player). On the other hand, the dimmer the light, the more damaging are enemy attacks--just two hits will kill at the lowest light-level--and, naturally, the more difficult it is for the player to spot nearby foes.
I also had the game's footstep-sounds increase in volume when the light is dimmer, hopefully making the enemies sound all the nearer...
Finally, a few miscellaneous pieces of progress were made; perhaps most salient is that the player-character can now die, and then choose to either restart or return to the main menu.
That's all for today--stay well, and thank you for reading! ^_^