| Game | Achievement | Points | From | To | |
|---|---|---|---|---|---|
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Do You Remember When We Met | 0.53 | 06/22/2025 00:00:00 | 06/22/2025 23:59:59 |
| H3: ODST: Play a game of Halo 3: ODST on the 22nd of any month. | |||||
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Third Time's A Charm | 0.47 | 06/25/2025 00:00:00 | 06/25/2025 23:59:59 |
| Halo 3: Play a game of Halo 3 on the 25th of any month. | |||||
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Storyteller | 1.39 | 07/04/2025 00:00:00 | 07/04/2025 23:59:59 |
| Have 12 murderous dates with Calendar Man | |||||
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Elder Signs | 1.34 | 07/04/2025 00:00:00 | 07/04/2025 23:59:59 |
| Halo 3: View 2 different sigils on Valhalla. | |||||
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A Long Time Ago | 0.52 | 07/06/2025 00:00:00 | 07/06/2025 23:59:59 |
| Halo 4: Play a game of Halo 4 on the 6th of any month. | |||||
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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. | |||||
|
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Back At It | 0.58 | 07/09/2025 00:00:00 | 07/09/2025 23:59:59 |
| Halo 2: Play a game of Halo 2 Anniversary on the 9th of any month. | |||||
|
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Remember Reach | 0.56 | 07/14/2025 00:00:00 | 07/14/2025 23:59:59 |
| Halo: Reach: Play a game of Halo: Reach on the 14th of any month. | |||||
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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. | |||||
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Vintage Scares | 2.60 | 10/23/2025 00:00:00 | 10/31/2025 23:59:59 |
| Visit Heavenly Toys during Ink Demon's Eve | |||||
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Skulls of the Cauldron | 2.50 | 10/24/2025 00:00:00 | 10/31/2025 23:59:59 |
| Bring Back the Dead to the Source during the Halloween event. | |||||
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Ding Dong Delights | 2.55 | 10/24/2025 00:00:00 | 10/31/2025 23:59:59 |
| Trick or Treat to ten doors with style during the Halloween event. | |||||
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Cabbage Night | 2.52 | 10/24/2025 00:00:00 | 10/31/2025 23:59:59 |
| Trick or Treat to ten doors without a mask during the Halloween event. | |||||
|
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Happy Halloween! | 0.99 | 10/31/2025 00:00:00 | 10/31/2025 23:59:59 |
| Play the Halloween version of the game. | |||||
|
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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. | |||||
|
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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. | |||||
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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. | |||||
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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. | |||||
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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. | |||||
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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. | |||||
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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. | |||||
|
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Santa's Little Helper | 1.27 | 12/01/2025 00:00:00 | 12/31/2025 23:59:59 |
| Deliver all presents in the eight levels when they are touched by frost in December | |||||
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Christmas In Cairo | 1.36 | 12/10/2025 00:00:00 | 01/05/2026 23:59:59 |
| Decorate the Christmas tree. | |||||
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Reindeer Hunter | 1.81 | 12/10/2025 00:00:00 | 01/05/2026 23:59:59 |
| Decorate the Christmas tree on each level to unlock Rodolfo player model. | |||||
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Ho Ho Hell | 2.21 | 12/24/2025 00:00:00 | 01/06/2026 23:59:59 |
| Defeat Krampus | |||||
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Christmas Shopping | 1.45 | 12/25/2025 00:00:00 | 12/25/2025 23:59:59 |
| Buy an item from the Camp Store on Christmas. | |||||
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|
Endless Day | 1.86 | 01/21/2026 00:00:00 | 01/25/2026 23:59:59 |
| On this day, Endless technology lights up and strange things appear... | |||||
|
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Endless Day | 2.19 | 01/21/2026 00:00:00 | 01/25/2026 23:59:59 |
| …the galaxy as the Archivist, Emlek Tarosh, fulfills its duty. | |||||
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Endless Day | 1.27 | 01/21/2026 00:00:00 | 01/25/2026 23:59:59 |
| ...in the ruins all across Auriga, and even throughout... | |||||
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Endless Day | 1.85 | 01/21/2026 00:00:00 | 01/25/2026 23:59:59 |
| You have unlocked the Endless archivist; the being that watches the watchers… | |||||
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Be Mine | 1.87 | 02/14/2026 00:00:00 | 02/14/2026 23:59:59 |
| Use the heart emote on Valentine's Day. | |||||
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Cherry-Picked | 1.34 | 04/01/2026 00:00:00 | 04/30/2026 23:59:59 |
| Play the game in May 2019 to celebrate its Japanese release and the Hanami festival, or during April each year | |||||
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Return of the druids | 1.99 | 05/01/2026 00:00:00 | 05/01/2026 23:59:59 |
| Start Spellcaster University on the day of the Beltane festival. | |||||