The arrows in each row or column become green only when the line is correct, which gives a too good clue if you have to decide among a few options by just trying. I suggest to make them green when just the numbers fit, otherwise the puzzles become very easy.
it is instrumental you kill the mooks as soon as possible. This is because those you kill will not appear in the final battle so you can heal in between!
 "Color Pic-a-Pix Light Vol 2"){kind=icon}
 "Super Samurai Sweeper"){kind=icon}
 "Accelerator"){kind=icon}