Defeat 100 enemies with the Lead Pipe in Scenario Campaign Mode.

You completed the mission "I'll Take Her".

You made a taxi trip from one island to another without skipping.

You beat a friend at pool.

You unlocked the special ability of Roman's taxi.

You completed the mission "Uncle Vlad".

Complete all three Campaigns

Retrieve the second artifact

Find a way into the Research Lab

Survive trial by combat

Kill two enemies with one throw of the Battle Disc

Find the Youngbloods in the Jungle

Create a new species