other chaos god idea

1 special enemies

tzeench use magic to change form for different use change environment cast spells n teleport or turns invisible creates clones and other abilities to fuck with players (can disguise themselves or others as different things so it could make chaos spawn look like a sniper ) strongest at range weakest in melee

slanesh melee characters lightning fast and elgent attacks messes with or uses sounds as attacks gets stronger the lower their hp gets dodges attacjs easily but has lowest hp

khorne brutal attacks that cant be blocked deals massive damage including bleed once they begin attacking cant be stopped until killed attacks however have wind ups or telegraphs has slight resistance to magics but is still weakest against ranged attacks (has 25% resistance to magic but takes 50% more damage against ranged attacks

2 trials these a re similar to trial chest in vermintide 2 where you fight special enemies for rewards but instead of summoning them to you you go into a portal to fight your way through until you reach a boss enemy of chaos god you get to vote on which to fight for boons from chaos gods or destroy it forv the emperor

boons

khorne makes all melee attacks incredibly strong heavy attack stuns any enemy removes dodges and block and ranged attacks increase hp and damage resistance

slaanesh increases melee attack speed movement speed dodge distances no limits on dodges reduce hp and armor greatly

tzeench increases all ranged and magic abilities greatly stuff like unlimited crits ammo increased damage range accuracy etc but you cant use melee

these boons ca n also be put on weapons in place of the normal2 blessings but are much weaker than the mission boon rewards since it will always be on your weapon

emperor