Thanks, and sorry again for the hassle.
The level design and testing phase was only in the last couple of days, so it might need a little tweaking. Was planning to have more time for that, but had to create and debug a level editor program or revisions would have been a nightmare. The part that seems crazy even to me is that all the level data, including enemy placement, takes just 65 characters , and the second level, the simplest, only takes 16. o_O