If you're not one of those lucky people with an old fart for a computer, then you'll need some tactics for this game, here's the SAFE SPOTS for the bosses! Boss 1: http://i35.tinypic.com/16hqalv.png - no further notes needed | Boss 2: http://i38.tinypic.com/ifbudv.png - At the first three waves you can shoot and absorb all you want - just don't ever move. When the scanner fixes at you at the last wave the only undetected thing is absorbing. | Boss 3: I haven't found a complete safe spot here. Although it shouldn't be too hard. Stay in the bottom at all times, the middle when it's doing the simple shots and mainly in the bottom left when it's doing special shots. For the last wave you simply stay in the other direction than the one it shoots special shots in and you'll dodge it easily. | Boss 4: Wave 1: http://i36.tinypic.com/2iru449.png - Wave 3: http://i38.tinypic.com/30tpile.png - Wave 2 and 4 has no safe spots, it's just about practice and maybe luck.