Complete Area 1
Complete Area 2
Complete Area 3
Complete Area 4
Complete Area 5
Picked up a medi-pack for the first time.
Died for the first time.
Score over 9 thousand
Unlock the Rifle for the first time.
Unlock the Shotgun for the first time.
Use a grenade for the first time.
Kill 50 Spiders
Kill 100 Spiders
Kill 250 Spiders
Kill 1000 Spiders