i don't know why you want to get 100% kill rate in first place , its wont give you better weapon growth
but to answer your question , yes they count
to maximized an legendary item lvl (lvl cap is 200) you need to do the folowing
1) Each floor you clear or skip counts at 1 level.
2) Each mystery room ambush you defeat in two turns or less grants +5 levels.
3) Each level orb you collect grants bonus item levels:
+5 for a green,
+10 for a yellow
+15 levels for a red.
4) Each time you speak to the fortune teller he'll give you either -5, -3, +3, or +5 item levels.
5) 50 levels are acquired from Pirate Raiding
also you may want to do the following
3 large stat growth bills passed
The 200 mana bill increases growth by approximately half the value that the
800 mana version does. For these items, you wouldn't want to use the 200s
,it's best to pass them as early as possible (i.e., floors 10, 20, and 30)
Item bosses double-killed
Kill each boss one time when you first see it (on floor X0), exit out,
return to the item, kill the boss again and finish the floor. The reason for
this is that it's required that you complete a floor to receive the bonus from
killing a boss. The first kill uses the floor before the item boss, and the
second kill used the floor that the item boss itself was on.
Item full of single stat-boosting innocents during boss kills
At each boss kill, your item receives an additional bonus to its stats for each
single stat innocent on the item, though the bonus is very small (less than
20,000 if you concentrate on one stat). To maximize this, simply fill the item
with single stat innocents of your choice, their level is irrelevant for this
purpose.
Be careful on floor 30. After your first item King (Floor 30 Boss) kill, the
population will increase by 1, so you can add another innocent before you go
back and double kill him. Then, don't forget to add the eighth and final
innocent after the double kill is complete.
that if you want to maximized an item , but its better if you do it on last tier on weapons and items
