Nice game, fairly short, but cool atmosphere both visually and with the audio. Also played quite nicely. A few remarks:
- Found it relatively hard to aim with jumping etc, physics might be a bit 'too fast'
- When using the shield it uses up some energy, but then it stops draining and even starts charging while still using the shield. You can just hold the shield forever. Makes it really easy to beat the boss. Is that a bug?