World 1

World 1 is the first place that begins the game of EX2: The Advenchers. This is the in-game description:

"The first world! Defeat the boss lurking there!"

The max level is 100, and the max experience points is 9,999,999, which means it will take about a year and 2 months to get to the max. You get rewards after getting past a level.

Boss: Hand

If you complete a world, you get 10 levels. (Except Worlds 10 and ???)

Levels in World 1: 2

1 level in World 1 = 5 level-ups

You cannot get experience points after beating a boss, just the levels!

(After Completing World 1) Missions:

Level 1: Complete Level 1 with no damage (15%)

Level 2: Complete Level 2 while being Level 7 or higher. (84.91%)

BOSS: Beat the boss under 55 seconds. (44.18%)

(After Completing the Half Game) Rare Missions:

Level 1: Complete Level 1 while being Level 21 or higher. (59.61%)

Level 2: Complete Level 2 with no damage. (10%)

BOSS: Beat the boss under 30 seconds. (33.04%)

(After Completing the Full Game) Legendary Missions:

Level 1: Complete Level 1 with no damage. (5%)

Level 2: Complete Level 2 under 15 seconds. (22.91%)

BOSS: Beat the boss while being Level 79 or higher. (64.19%)

If you complete all the missions on World 1, there is a Rainbow-Gold Mission that 0.1% of people did:

Level 2: Find the secret vent. (0.1%)

Secret Vent: If you find the secret vent, then you get the full Vent Monster pack.