Here is the full list of all 11 Serious Sam: Kamikaze Attack! achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Finish every level in the Jungle
Finish every level in the desert
Blow up Sam 25 times
Boot 150 bombs
Stay airborne for 20 seconds
Kick 100 missiles
Kick 150 frogs or turtles
Smash through 100 obstacles
Blow up Sam ten times
Put on a head
Blow up Sam for the first time