The most useful part in game is probably the Mechas Subzero Antennae with its freezing ray. You can just freeze in everything that looks like an enemy except the mechas. Also it is pretty useful for the levels end. Just stay at the edge and freeze humans. Later, when you run out of energy just go kill them and take the next part of the city. For skulls missions counts a similar rule, just stand in the edge and use the spider eyes from time to time. Kill enemies with the chilling ray as it costs low energy and if you can aim at least a little it's the best you can get.
For the bosses i highly recommend some specialized skills. For the first you especially need the chickens lightning and the barbecue sauce... it has some pretty bad range, but believe me, once it hits the mech is nearly dead. Later just switch to the killer eye for the mechas, it fries them pretty good.
This reminds me of a festival in my hometown when one of these "mostpopular" castingshowwinners appeared just to be watched by ten people... 5 of these actually had brought throwable hamburgers... well it was cool^^
Rated it 5/5 though i would highly suggest to increase the chance for I'ts rob! and Rise!
I played through the whole game, got all unlockables, but still dont have any of these^^
Sry im no fan of these graphics... It seems like someone wanted a lot of details, but instead put in the brightest colours he could find and replaced the details with pixels... not nice to look at...