This news is shared by TheLoosers guild leader DNMegi.

I won't do it as nicely this time since there's quite a lot of events

1) Mentoring has been increased to level 55

2) 8/23 - 9/10 MIDNIGHT

Requirement: LV55 or under

Doing These nest once or more give:

Nests:
Minotaur, Cerberus, Manticore
Apocalypse, Archbishop, Giants (doesn't matter what mode except practice)
- 2x Goddess Tears EACH NEST

3) Done by 9/02

Finish a dungeon with Baby Manticore and you will be rewarded
- 2x Pet skill bag

4) DEADLINE 8/27

Instant leveler event 50 - 60 (THIS DOES NOT APPLY TO KALI)
Buy 1x Blue Mail Stamp by 8/27 for 109,173,336 EXP! (must be in CASH POINT NOT DC or GIFT)
along with some stupid title

5) On 8/27

Requirements: 50+
Everyone who is eligible receives
- Large Black cat ears
- Large Black cat tail
- Random Title box ?
- 5x Random Cat star people 0.0 ?

6) EXP 8/23 - 9/01

4pm-10pm China Time, 1am - 7am PST
PARTY EXP boost 50% , Friend boost 25%

7) LEVELING EVENT FOR CERTAIN LEVELS

Upon reaching these levels, NEXT DAY these items will be given:
Level: Item:
17 HP pot x 20, MP pot x 20
27 Seals x 5
33 100% EXP book
42 20 bags of Goddess Tears(idk what that entitles 20 or more?)
47 300% EXP book!!! one get to lvl 60?!
50 Tattoo bag x1
60 Red Horse x1 30 days

8) 8/23 - 9/02

Requirements All Kali Characters
Clear once or more(OF COURSE MORE FOR FASTER EXP!!)
Goblins, Orc Counter Attack, Persian Goblins (Theme park)

Reward:
- 20x Incomplete Seals (x3)

9) 8/23 TIL NEXT UPDATE

EXP increase 100% in areas 水晶谷 , 黑色废墟, 堆满落叶的湖岸 , Which is NOOB area.
EXP increase 150% in areas around Saint Haven, 黑山山角 , 赫尔马岱港口( North and South Area of SH)

10) 8/23 - 9/07

Requirement: LV32+
Log in for these days (total/consecutive)

Give these
5-9 5 Seals
10-12 Green Wings 7 days
13 + days Pandora Hearts and Key x 2 and Green Wings 30 days

11) 8/23 - 9/02

For First time buyers only !!
Buy one Bag (30 spaces) , will give you one warehouse (30) space and Adventurer's Backpack with Coupons ( 30 space) last 7 days

12) 8/23

All new Jump char gets
50A +10 Equips
40A x3 Crest
Name Change card
Backpack 30 space
Repair Props
Champion jump level help books

13) 8/23 Till Next Update

Jump Chars
For Completing the Lessons
1 - LVL 50A accessories
2 - Cash costume 30 days
3 - Unlimited Skill reset 1 day
4 - nothing
5 - nothing
6 - Exclusive title
7 - 3 Potential code and Demise Box?
8 - 5 Armor code , 5 Diamond code
9 - Lightning Horse
10 - Pet 7 days

14) 8/23 - Till Next Update

For all jump chars
Level up to
51 - Give 5 bag space , Discount coupon for 30 bag space, revive pet discount 90 days
52 - Warehouse 10 grid, Discount on warehouse 30 spaces
53 - 5 bag space
54 - 5 warehouse space
55 - 5 bag space
56 - 10 warehouse
57 - 5 bag space
58 - 10 warehouse
59 - 30 Protection jellies
60 - 20 Seals, 1 day Skill reset

15) 8/23 - 9/02

Buy the 30 day VIP, Give one Pandora heart and Claw

16) 8/23

GIVE OUT FREE LVL 60 hELL TICKET FOR ALL LVL 60S

17) 8/23 - 9/16

LVL 55 and up
Mentor from 1 -50 , (actually 10-50)
1 person - 5 seals
2 - 3 ppl - 20 Goddess Tear
4+ - 2 Tattoo Bag

18) 8/23 - 9/02

Finish lvl 55 5 Abyss maps (do your dailies)
Reward:
- 1x Tattoo Bag

19) 8/23 - 9/02

Requirement: Lv60+
Clear Nests (all abyss)
SDN & GDN Diamond codes x 2
Typhoon 5x those shiny frags for all three
K nest 5x those shiny frags for all three
SOLO mode for lvl 60 nest ( pick one) Clear it and get 5x those shiny frags for all three

credits to: Ace無敵馬超 for translating
reference: Click Here.