Weapon Experience
Mega Man Zero 2 features a weapon experience system like Zero "1". The more you use a weapon, the better Zero can use it.
Information here was originally posted in a pastebin by Kuriban - https://pastebin.com/AFeyKueR
It should be noted - Damage done during the intro stage does not affect weapon experience.
Z-Saber
Levels
| Level | XP needed | Effect |
| 1 (Start) | 0 | Single sword slash. Normal jump slash. No elemental effects |
| 2 | 30 | 2 standing slash combo |
| 3 | 90 | 3 standing slash combo |
| 4 | 290 | Can Charge saber attack and apply elemental chip damage |
| 5 | 850 | "Quick Charge" (for saber) |
XP Table
| Attack | XP Gained |
| Second Combo Slash | 2 |
| Third Combo Slash | 4 |
| Charge Slash | 8 |
| Everything Else | 1 |
Z-Buster
Level Table
| Level | XP needed | Effect |
| 1 (Start) | 0 | |
| 2 | 200 | Full charge shot, Elemental effects |
| 3 | 600 | Quick Charge (for buster) |
XP Table
| Attack | XP Gained |
| Lemons | 1 (including boss iframes) |
| Half Charge | 2 |
| Full Charge | 4 |
Chain Rod
Level Table
| Level | XP needed | Effect |
| 1 (Start) | 0 | |
| 2 | 50 | Full charge, Elemental effects |
| 3 | 210 | Quick Charge (for chain) |
XP Table
| Attack | XP Gained |
| Normal | 1 |
| Charged | 2 (per hit) |
Shield Boomerang
Level Table
| Level | XP needed | Effect |
| 1 (Start) | 0 | |
| 2 | 30 | Mid Range throw |
| 3 | 80 | Long Range throw |
XP Table
| Attack | XP Gained |
| Charge Attack | 1 |
| "Point Blank" Charge Attack | 2-3 |