Not bad! :D The concept is nice. There is a some juice to it! Love the particle effects. You can really only play it for like 2-3 minutes though. A few notes:
- It takes way to long to teleport once there are lots of enemies. Its frustrating to teleport to a spot only to have an enemy immediately spawn near that spot with not time to quickly teleport away.
- On spawning, I think once the arrow is clicked, at least during the duration of the teleport sound you should make enemies move away from the spot you are about to teleport to as well as not let them spawn near it once you teleport to that spot for at least a second or two.
Overall, not much to go on, but good work! :D