Hack through a maze of monster-filled tunnels to the glowing exit. You start with 5 hearts — every hit costs one. Watch for skeletons, zombies, fast spider packs and their hulking giants, hooded necromancers (they summon, and drop a full-heal heart), and wall-phasing ghosts you must dodge. Find the golden sword in a chest hidden far off the path — it hits harder and can cut down ghosts. Slain giants and ghosts drop hearts; the minimap and exit arrow show the way.
Reach the exit at the far end of the labyrinth to escape. Skeletons die in a few swings; zombies are tougher; cave spiders scuttle in fast zig-zagging packs and dart away after biting; their giant cousins are slow but soak up hits and drop a heart. Necromancers hang back raising skeletons and drop a full-heal heart. Ghosts drift through walls from any direction — only the golden sword can banish them. The golden-sword chest sits far from both start and exit (gold on the minimap). A heart grabbed at full health adds a bonus heart beyond your starting five.