I thought it was OK (but just OK) until the last part when it was plain that they had a half hour to kill. Then they concocted that device where the lab was going to blow up killing the main characters unless somebody runs through a bunch of gauntlets, climbing a greasy pole and hanging by fingernails while gadgets smoke, gongs ring, a mechanical female voice chants "1...minute until self destruct...". This device, used in countless bad SciFi movies needs one character to die in self sacrifice and another who cuts the blue wire after almost cutting the red wire 3 seconds before self destruct. That really spoiled it for me.