yes, there is. at the bottom left theres a pause-play-2x speed-x3speed. v nice and easy game once you get the 2nd last gun, the end one hits 1000, 1hit kill on the super huge blobs xD nice 4/5
erm ... is ti jsut me but the guys are invisible, i have to guess where they are and try and kill them? and whent eh trapdoors open, i suddenly loose =S