A possible concise summary is:
The speaker tries to kill the headless horseman in TF2 with his friend, but fails repeatedly and gets frustrated. He then unboxes some Halloween cases and finally gets an unusual taunt, but he has to buy the taunt separately. He shows off his unusual effects in-game, but regrets spending so much money and time on them.
Here are some possible facts extracted from the text:
1. The speaker is trying to kill the headless horseless horseman in TF2 with sticky bombs.
2. The speaker has a friend named Tava who is helping him with the mission.
3. The speaker dies to a random crit and Tava kills the horseman with a crossbow.
4. The speaker unboxes 50 creepy crawly cases and gets two unusual taunts.
5. The speaker has to buy the taunts separately from the store to equip the unusual effects.
6. The speaker is unhappy with his unboxing results and regrets spending so much money.