What an unique and fun game! Combining metroidvania with semi bullet hell is something I wasn't expecting to work as well as it did.
I think having to restart your hacking from scratch when you go out of range of an enemy makes the game a bit too hard, so perhaps instead having it drain rapidly would work better. Just long enough to let you correct a small mistake but could still be punishing for messing up badly. In a similar vein, having slightly larger areas on most enemies would allow for a bit more maneuverability while still being challenging.
Despite those balance issues, it's still a well made game and definitely the most original take on the genre I've seen so far in this jam. Well done!