Discord
For any information about speedrunning, check the Discord server: https://discord.gg/zN7cc8Z
Everyone is wholesome there and happy to help.
Leaderboard
A good way to improve is to watch other runners. Most of them are streamers, and you can check their best runs here: https://www.speedrun.com/hades/full_game
Wiki
Check the wiki if you need information about boons and such: https://hades.gamepedia.com/
Maxed save file
You can download a maxed save file with an empty run history (Max Save With No Run History, by Ellomenopi) here: https://www.speedrun.com/hades/resources
While you should probably finish the whole game before using it, it can be useful if you don’t have enough Blood to buy the upgrade for a weapon or do not have maxed your Summon / Keepsake / Mirror
LiveSplit
LiveSplit can help you better time your runs and compare to other runners. Check this guide: https://www.speedrun.com/hades/guide/tvxz3 made by our wholesome Museus
Other guides
Speedrunning basic by Wriste
Wriste-lol made an excellent generic speedrunning guide: https://www.speedrun.com/hades/guide/5km0y
Speedrunning videos by Haelian
Haelian made several video guides about the mirror, heat and more : Haelian’s Youtube
Monsters information:
List of every monster HP and « modifier » : Google sheet