A Shadow at Dusk is a difficult challenge modpack made for version 1.16.5. Playing through the pack, you will encounter trial after trial and be forced to overcome great difficulty handcrafted for the survival experience. I always liked the Epic Fight mod, and this pack started off as a project involving making something completely surrounding its mechanics. It quickly evolved to become the ultimate Minecraft exploration and combat pack.

Quick notes:

Find gravel to break down for flint
Right click flint on the top of a hard block to get flint shards
Combine these shards with sticks from leaves to make a flint knife
Use the flint knife to cut tall grass around you and get plant fibers
Use plant fibers to make plant string which can be used to make a flint axe
Use the flint axe to cut down a tree and get wood
Press "R" to switch between combat mode and mining mode (you cannot attack enemies in mining mode)
Find skillbooks in chests which can be used to learn combat abilities
Craft a variety of new weapons other than the basic sword and shield
Watch the health on your chest and head
Use a campfire to regenerate, as you will not be able to regenerate health naturally
Beware the dragons

OptiFine is recommended for performance and shaders, but you must install OptiFine_1.16.5_HD_U_G8 to avoid a crash

Please note that this modpack is still in beta, so record any bugs or issues you may encounter in the comments.