Killed by the Weakest Monster.
Use weapon to slay more than two monsters.
Escape Ending Reached
Stayed in the bunker for more than 1 minute.
Flight time greater than 60 seconds.
Acquire All Firearms Weapons
Into the Eve of the Dawn War.
Acquired after one pass
Kill the final boss
Dive time exceeds 30 seconds.
3 minutes with the monster after the monster appears.
Trigger UFO Ending