After some consideration, I have decided to go with a 2D game instead of a 3D game. Below is an update design doc.
Adventure Game- V2.0
-2D Adventure Game
-Undead Theme
-Cave setting
-Player is a skeleton.
-Skeleton can use melee weapons to fight enemies.
-Player fights their way through the cave.
-Enemies include: miners, bats and slimes.
-Skeleton loses HP after damaged.
-Losing head after 3 damage results in character death and respawn.
-Water regenerates player.
-Pools of water can be found throughout cave.
-Defeated enemies drop loot.
-Treasure chests can also be found.
-Player will have a health bar, score counter and timer