i made this a whole discussion rather than a comment in the abilities discussion because it was pretty long,anyways:

killer sans abilities:similar to dust due to the lv system
passives:lv system,autododge until lv 12


starter abilities:knife slash (lmb) (dashes forward and slashes the enemy,dealing 20 damage) and spiky bone throw (rmb) (same as sans's normal bone throw but the bones are spiky)

lv 7:new ability,bone wave (r) (sends a long wave of spiky bones in a line from the player to where their mouse is,the longer the wave is,the more strength it takes but the speed inbetween each group of bones rising up stays the same)

lv 12: autododge disabled:new ability,bad time mode/blue magic (e) (blue magic throws the enemy upward and then downward,and then stabs the enemy with spiky bones,bad time will be covered later)

lv 16:new ability:bone block (middle mouse button) (makes spiky bones come out of the ground for 5 seconds and block bullets or melee hits

lv 20:max lv


bad time mode moveset

e + lmb:knife projectile (the player stands still and slashes to create a red crescent shaped projectile,charge to increase power)

e + rmb:blue spiky bones (spiky bones now do double the damage unless the enemy is standing still,in which case the bones will go directly through the enemy without dealing damage)

e + r:bone hill (the longer the bones go,the higher the bones are)

e + mmb:bone counter,now stabs the enemy after the bones take damage,doing a small amount of damage to the enemy

if you like the idea you can change whatever you want about it,and some of this is taken from killer sans vs swap sans,the rest is just ideas i came up with