| Game | Achievement | Points | From | To | |
|---|---|---|---|---|---|
|
|
A Day To Remember | 0.57 | 07/15/2025 00:00:00 | 07/15/2025 23:59:59 |
| Halo CE: Play Halo: CE on the 15th of any month. | |||||
|
|
Do You Remember When We Met | 0.53 | 07/22/2025 00:00:00 | 07/22/2025 23:59:59 |
| H3: ODST: Play a game of Halo 3: ODST on the 22nd of any month. | |||||
|
|
Third Time's A Charm | 0.47 | 07/25/2025 00:00:00 | 07/25/2025 23:59:59 |
| Halo 3: Play a game of Halo 3 on the 25th of any month. | |||||
|
|
A Long Time Ago | 0.52 | 08/06/2025 00:00:00 | 08/06/2025 23:59:59 |
| Halo 4: Play a game of Halo 4 on the 6th of any month. | |||||
|
|
All Hallows Eve | 1.53 | 10/31/2025 00:00:00 | 10/31/2025 23:59:59 |
| Celebrate Fruit Ninja on All Hallows Eve | |||||
|
|
Elder Signs | 1.34 | 10/31/2025 00:00:00 | 10/31/2025 23:59:59 |
| Halo 3: View 2 different sigils on Valhalla. | |||||
|
|
Cheerful Child | 1.02 | 10/31/2025 00:00:00 | 11/04/2025 23:59:59 |
| In the Safe House Nightmare job find the correct baby mask on the Normal difficulty. Unlocks the "Happy Baby" mask. | |||||
|
|
Gilliam's Sweet Little Baby | 1.04 | 10/31/2025 00:00:00 | 11/04/2025 23:59:59 |
| In the Safe House Nightmare job find the correct baby mask on the Hard difficulty. Unlocks the "Brazil Baby" mask. | |||||
|
|
Temper Tantrum | 1.06 | 10/31/2025 00:00:00 | 11/04/2025 23:59:59 |
| In the Safe House Nightmare job find the correct baby mask on the Very Hard difficulty. Unlocks the "Angry Baby" mask. | |||||
|
|
Water Works | 1.07 | 10/31/2025 00:00:00 | 11/04/2025 23:59:59 |
| In the Safe House Nightmare job find the correct baby mask on the OVERKILL difficulty. Unlocks the "Cry Baby" mask. | |||||
|
|
Sixth Nightmare | 1.08 | 10/31/2025 00:00:00 | 11/04/2025 23:59:59 |
| Complete the Safe House Nightmare job on the Death Wish difficulty or above. | |||||
|
|
Fifth Nightmare | 1.20 | 10/31/2025 00:00:00 | 11/04/2025 23:59:59 |
| Complete the Safe House Nightmare job on the Mayhem difficulty or above. | |||||
|
|
A Horrible Seventh Nightmare | 1.29 | 10/31/2025 00:00:00 | 11/04/2025 23:59:59 |
| Complete the Safe House Nightmare job on the Death Sentence difficulty with the One Down mechanic activated. | |||||