Jundeon Grawler 40

Premise

You're a knight going through a dungeon for some reason.  You find a BIG needle, but unfortunately, something comes up behind you and stabs a hole straight through your chest.  You fall back, catching just a fading glimpse of the monster.  You throw the needle at it before dying.  Except, you're awake?!  And the hole in your chest has sealed up!

How'd the needle get back in your hand?  W-what happened to your heartbeat...?

WASD to move, Spacebar to attack, Escape to Pause/Play.  Q while paused to quit.