I've rated and played yours, sorry for the late reply! 
I really like the mecha aesthetic and your game felt really unique. I love the stock market idea, that's a great way to incentivise the use of multiple weapons! I did feel it was too easy to run out of weapons though, especially on the second boss where it is quite hard to hit the bosses weapons for it to drop them. Really cool game overall!

I rated your game! It was pretty fun, I think the resource management aspect with your hp/ bullets was really interesting! I think the 2nd boss should telegraph its attacks more though.

Sorry for super late reply, I played and rated your game! Really liked the aesthetic, was pretty fun! I'd say there could have been a bit more clarity, I don't think anything in-game suggests that hacking costs hp, I only realised after re-reading your page description. Also I couldn't figure out if Bob the Blob did anything, but I like his name :P
Great job overall!

Sorry for late reply. I liked the aesthetic of your game, I'd lower the rate of fire for the player though as it causes some issues.