List of Medals and how to get them

[spoiler=
Others that are unidentified]

The Curse Breaker Medal
Accessory - All classes
STR: +4
DEX: +4
INT: +4
LUK: +4
Speed: +10
Jump: +5
Hands: +2
Time Limited

How to obtain: Complete all Halloween Event quests in the mansion.



바른말 고운말 쓰기 Medal (MapleSea calls it "Good language" Medal, a korean friend of mine told me when it was new in kMS, that it just says "Don't use bad words")
Accessory - All classes
Speed: +10
Time Limited
How to obtain: It was part of the "Maple Green" Event in kMS



무엇이든 물어보세요 Medal (Ask Anything Medal)
Accessory - All classes
Speed: +10
Time Limited
How to obtain: It was part of the "Maple Green" Event in kMS



저와 친구해주세요 Medal (Be My Friend Medal)
Accessory - All classes
Speed: +10
Time Limited
How to obtain: It was part of the "Maple Green" Event in kMS


참 나라사랑 Medal (Patriot Medal)
Accessory - All classes
HP: +10
MP: +10
Time Limited

How to obtain: Talk to this NPC daily by 6 PM.

[/spoiler]

Added infos to unidentified medals.