Thanks for playing! I'm interested to know more about these bugs, I am considering following up and bugfixing after rating has ended. When you say the aim was bugged in the second level, what do you mean exactly?
I've seen a bug a few times where the shooter moved and aimed incredibly fast, and thought I'd squashed that. It did seem to be occurring around the third level for me as well, though the level itself actually shouldn't matter with how he scales. Thanks for reporting that, something to look into for me :P
Thanks again!