| Game | Achievement | Points | From | To | |
|---|---|---|---|---|---|
|
|
A Long Time Ago | 0.52 | 05/06/2025 00:00:00 | 05/06/2025 23:59:59 |
| Halo 4: Play a game of Halo 4 on the 6th of any month. | |||||
|
|
Back At It | 0.58 | 05/09/2025 00:00:00 | 05/09/2025 23:59:59 |
| Halo 2: Play a game of Halo 2 Anniversary on the 9th of any month. | |||||
|
|
Remember Reach | 0.56 | 05/14/2025 00:00:00 | 05/14/2025 23:59:59 |
| Halo: Reach: Play a game of Halo: Reach on the 14th of any month. | |||||
|
|
A Day To Remember | 0.57 | 05/15/2025 00:00:00 | 05/15/2025 23:59:59 |
| Halo CE: Play Halo: CE on the 15th of any month. | |||||
|
|
Do You Remember When We Met | 0.53 | 05/22/2025 00:00:00 | 05/22/2025 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 | 05/25/2025 00:00:00 | 05/25/2025 23:59:59 |
| Halo 3: Play a game of Halo 3 on the 25th of any month. | |||||
|
|
Back to Back | 1.64 | 06/02/2025 00:00:00 | 06/02/2025 23:59:59 |
| Complete two Ancient Hunts and two Daily Trials, in two-player co-op, on the second day of the month | |||||
|
|
Storyteller | 1.39 | 07/04/2025 00:00:00 | 07/04/2025 23:59:59 |
| Have 12 murderous dates with Calendar Man | |||||
|
|
Elder Signs | 1.34 | 07/04/2025 00:00:00 | 07/04/2025 23:59:59 |
| Halo 3: View 2 different sigils on Valhalla. | |||||
|
|
Destination Vacation | 1.29 | 07/07/2025 00:00:00 | 07/07/2025 23:59:59 |
| Halo 2: View one of the seasonal signs on Zanzibar in classic multiplayer. | |||||
|
|
A Horrible Seventh Nightmare | 1.30 | 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. | |||||