New improvements and fixes.

-The Reaper, now deals damage by just touching it and after a while its speed will be doubled.
-The Reaper appears after killing any boss, you will have little time to collect your rewards.
-The last boss is now a little easier in tier 1.
-Fixed an error in one of the final bosses.
-Special enemies now do not give gold.
-Added a blocking state, which makes it impossible to use the ability when the reaper appears.
-fixed a strange error in the boss's chest.
-The enemy ice arrows now have a blue flash.