Here is the full list of all 37 Serious Sam's Bogus Detour achievements.
Kill all turtles on Path of Feast/Fear.
Defeat Slick Stinger.
Kill all enemies on a level of the Bogus Campaign.
Find the lost artifact of Amon-Ra.
Defeat Fattie Swallower.
Defeat Tetrachoke.
Defeat Prime-209 & Tech-X.
Complete the Bogus Campaign on Normal difficulty or higher.
Complete the Bogus Campaign on Serious difficulty.
Complete the Bogus Campaign without buying any upgrades on Normal difficulty or higher.
Complete the Bogus Campaign in Hardcore mode on Normal difficulty or higher.
Complete the Bogus Campaign in Multiplayer with at least on other player.
Complete the Bogus Campaign in Single Player using only the pistols on Normal difficulty or higher.
Complete the Bogus Campaign in Single Player within 60 minutes on Normal difficulty or higher.
Find both parts of the secret document.
Take the eye from Dr. Platt.
Find the Lightersaber.
Find all weapons in the Bogus Campaign.
Find all stars in the Bogus Campaign.
Find all extra lives in the Bogus Campaign.
Find all secrets in the Bogus Campaign.
Find the Auto Shotgun.
Unlock everything in the Combat upgrade tree.
Unlock everything in the Survival upgrade tree.
Unlock everything in the Weaponry upgrade tree.
Make sure no civilians are killed in the Bogus Campaign.
Hack the 4 terminals on Interplanetary Ballistic without failing once.
Die within 5 seconds of the start of a level.
Disable the satellite on Serious Sabotage.
Destroy all mines in the Bogus Campaign.
Complete a level of the Bogus Campaign without taking a single point of damage.
Complete any Survival level on Normal difficulty or higher.
Complete any Survival level on Serious difficulty.