Well presented and quite polished - I think the concept is really interesting, however there have been a few things that have held it back, IMO:

- Staying close to enemies to refill weapon charge didn't feel very rewarding, but rather felt like a necessity. It was a bit frustrating when you were forced to move out of range of some enemies, when you hugged them for a few moments, but still didn't get any charge. Perhaps a more responsive charge, with a low gain but much faster tick rate, would have worked well
- The player's power level compared to the time it takes to drain enemies. Taking down some enemies required more than one full charge, which really slowed down the gameplay as you were forced to turtle without doing anything, more than once per wave. If there was an additional way to attack, like some kind of special which becomes available when you overfill your meter, it would have been a more satisfying mechanic imo
- The size of the bullets' and the player's hitbox made dodging through thin gaps impossible. Especially while draining, you have to stay close to the enemy, but that means your large hitbox is also close to their bullet spawns, leaving you no time to dodge and forcing to tank... or get out and stop the charge.

While I do think there were quite a few missed opportunities with the game's mechanics, it's still a fairly solid submission to be made in just 10 days, and presented quite well. Looking forward to some post-jam updates ^^

Cool concept and the game is pretty fun, visuals are also nice. But since you need to get close to enemies in order to refill your ammo, you're basically forced to tank tons of bullets

interesting concept. pixel art is cute

I like the idea of draining the enemies to shoot more.

Cute graphics, a little tough, but enjoyed the theme of "limited". I am bad at video games, so it was a little tough for my to syphon energy and dodge the bullets at the same time.

Only thing I think is missing is a cute death animation :3

This was pretty hard! Trying to figure out how to siphon from each type of enemy was a game in and of itself haha

Very fun game! I love the pixel art style and sound design.

Really cool art, and the tether mechanic to reload is so cool. That's a very clever gimmic and makes the game so unique :) Only issue for me is that the range in which you need to tether is a little too small, so it makes it feel a little cumbersome. Other than that this is awesome (especially the art style!) well done!

The art was nice. However, the sound effects were quite grating. You should also probably be able to recharge faster, or maybe with a larger radius. 

I really liked this game! nice art, fun concept, nice gameplay, only that i feel it needs is to be a little bit more rewarding with how far away you have to be to get energy from enemies. Right now trying to drain energy from any enemy other than the three shot and the tracking shot feels like a death sentence. But still overall very good game

Cool take on a space invaders style game. I personally found it challenging to use the arrow keys as I'm used to WASD with my left hand and the arrow keys are on the right. I don't know if its because I'm so bad with the arrow keys or not but it felt difficult to properly strafe nearby enemies to charge up off them.

The sound FX were simple but fit the style well. The variation in enemy types was executed fairly well I feel.

Overall, a polished feeling entry.

Cool concept,  and nice art! I agree with the comments below about the charge mechanic but its a good idea

Nice art style that fit the mechanic. Agree with HonigBeeGames that the radius might be a bit small for some enemies. The enemies that shoot straight down could also benefit from a counter to just camping their heads to recharge.