Really cool game, and I like the idea of using time as a health bar that can go up and down.
Really clever to make it so that your inventory weighs you down as well, so its a balance trying to find the right time to drop off the relics before they weigh you down too much. I managed to survive for 240seconds :D
The character looks great and you managed to add some really interesting cards to spruce it up even more. Great job!