| Game | Achievement | Points | From | To | |
|---|---|---|---|---|---|
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|
Elder Signs | 1.36 | 05/05/2024 00:00:00 | 05/05/2024 23:59:59 |
| Halo 3: View 2 different sigils on Valhalla. | |||||
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A Long Time Ago | 0.53 | 05/06/2024 00:00:00 | 05/06/2024 23:59:59 |
| Halo 4: Play a game of Halo 4 on the 6th of any month. | |||||
|
|
Back At It | 0.59 | 05/09/2024 00:00:00 | 05/09/2024 23:59:59 |
| Halo 2: Play a game of Halo 2 Anniversary on the 9th of any month. | |||||
|
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A Day To Remember | 0.57 | 05/15/2024 00:00:00 | 05/15/2024 23:59:59 |
| Halo CE: Play Halo: CE on the 15th of any month. | |||||
|
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Third Time's A Charm | 0.47 | 05/25/2024 00:00:00 | 05/25/2024 23:59:59 |
| Halo 3: Play a game of Halo 3 on the 25th of any month. | |||||
|
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Storyteller | 1.40 | 07/04/2024 00:00:00 | 07/04/2024 23:59:59 |
| Have 12 murderous dates with Calendar Man | |||||
|
|
Destination Vacation | 1.31 | 07/07/2024 00:00:00 | 07/07/2024 23:59:59 |
| Halo 2: View one of the seasonal signs on Zanzibar in classic multiplayer. | |||||
|
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LuGus Fest | 1.68 | 08/01/2024 00:00:00 | 08/07/2024 23:59:59 |
| Activate all LuGus cubes in a single environment during the LuGus festival event. | |||||
|
|
Trick or Treat | 1.84 | 10/24/2024 01:00:00 | 11/07/2024 12:00:00 |
| Trick all the pumpkins into giving you treats in a single environment during the Halloween event. | |||||
|
|
Cheerful Child | 1.02 | 10/31/2024 00:00:00 | 11/04/2024 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 | 10/31/2024 00:00:00 | 11/04/2024 23:59:59 |
| In the Safe House Nightmare job find the correct baby mask on the Hard difficulty. Unlocks the "Brazil Baby" mask. | |||||
|
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Temper Tantrum | 1.06 | 10/31/2024 00:00:00 | 11/04/2024 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 | 1.08 | 10/31/2024 00:00:00 | 11/04/2024 23:59:59 |
| In the Safe House Nightmare job find the correct baby mask on the OVERKILL difficulty. Unlocks the "Cry Baby" mask. | |||||
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Sixth Nightmare | 1.08 | 10/31/2024 00:00:00 | 11/04/2024 23:59:59 |
| Complete the Safe House Nightmare job on the Death Wish difficulty or above. | |||||
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Fifth Nightmare | 1.21 | 10/31/2024 00:00:00 | 11/04/2024 23:59:59 |
| Complete the Safe House Nightmare job on the Mayhem difficulty or above. | |||||
|
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A Horrible Seventh Nightmare | 1.31 | 10/31/2024 00:00:00 | 11/04/2024 23:59:59 |
| Complete the Safe House Nightmare job on the Death Sentence difficulty with the One Down mechanic activated. | |||||
|
|
Christmas In Cairo | 1.36 | 12/10/2024 00:00:00 | 01/05/2025 23:59:59 |
| Decorate the Christmas tree. | |||||
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Reindeer Hunter | 1.83 | 12/10/2024 00:00:00 | 01/05/2025 23:59:59 |
| Decorate the Christmas tree on each level to unlock Rodolfo player model. | |||||
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Snow Spotter | 1.32 | 12/10/2024 01:00:00 | 01/10/2025 12:00:00 |
| Spot every snowman in a single environment during the Christmas event. | |||||
|
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Xmayhem Terminator | 1.80 | 12/18/2024 00:00:00 | 01/07/2025 23:59:59 |
| Pick up The Gift to become the T-IM101 | |||||
|
|
Hasta La Vista, Baby! | 1.77 | 12/18/2024 00:00:00 | 01/07/2025 23:59:59 |
| Terminate the T-IM101 | |||||
|
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Heart Collector | 1.71 | 02/14/2025 01:00:00 | 02/16/2025 12:00:00 |
| Collect all the hearts in a single environment during the Valentine's Day event. | |||||
|
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Leprechaun Madness | 1.98 | 03/17/2025 17:00:00 | 03/19/2025 17:00:00 |
| Find all pots of gold in a single environment during the St Patrick's day event. | |||||
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Fool's Gold | 1.87 | 04/01/2025 00:00:00 | 04/02/2025 12:00:00 |
| Collect all the coins in a single environment during the April Fool's event. | |||||
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Cosmonautics Day | 1.59 | 04/12/2025 00:00:00 | 04/12/2025 23:59:59 |
| Win 5 victories on the Cosmonautics Day | |||||