Kill three enemies with one explosion five times

Kill 20 enemies melee-attacking from behind

Kill three enemies with one explosion

Kill five enemies in a row with a single punch, after softening them up with gunfire

Find all 60 treasures

Kill 20 enemies with the Desert - 5

Finish the game in Easy Mode

Find 50 treasures

Win 50 races using a heavyweight vehicle

Unlock all 16 Speed events

Complete Soviet mission 3 on any difficulty level

Complete Soviet mission 1 on any difficulty level