| Game | Achievement | Points | From | To | |
|---|---|---|---|---|---|
|
|
Back At It | 0.58 | 12/09/2025 00:00:00 | 12/09/2025 23:59:59 |
| Halo 2: Play a game of Halo 2 Anniversary on the 9th of any month. | |||||
|
|
Remember Reach | 0.56 | 12/14/2025 00:00:00 | 12/14/2025 23:59:59 |
| Halo: Reach: Play a game of Halo: Reach on the 14th of any month. | |||||
|
|
A Day To Remember | 0.57 | 12/15/2025 00:00:00 | 12/15/2025 23:59:59 |
| Halo CE: Play Halo: CE on the 15th of any month. | |||||
|
|
Storyteller | 1.39 | 12/25/2025 00:00:00 | 12/25/2025 23:59:59 |
| Have 12 murderous dates with Calendar Man | |||||
|
|
Destination Vacation | 1.29 | 12/25/2025 00:00:00 | 12/25/2025 23:59:59 |
| Halo 2: View one of the seasonal signs on Zanzibar in classic multiplayer. | |||||
|
|
Cheerful Child | 1.02 | 10/31/2026 00:00:00 | 11/04/2026 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 | 10/31/2026 00:00:00 | 11/04/2026 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 | 10/31/2026 00:00:00 | 11/04/2026 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 | 10/31/2026 00:00:00 | 11/04/2026 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 | 10/31/2026 00:00:00 | 11/04/2026 23:59:59 |
| Complete the Safe House Nightmare job on the Death Wish difficulty or above. | |||||
|
|
Fifth Nightmare | 1.20 | 10/31/2026 00:00:00 | 11/04/2026 23:59:59 |
| Complete the Safe House Nightmare job on the Mayhem difficulty or above. | |||||
|
|
A Horrible Seventh Nightmare | 1.29 | 10/31/2026 00:00:00 | 11/04/2026 23:59:59 |
| Complete the Safe House Nightmare job on the Death Sentence difficulty with the One Down mechanic activated. | |||||