UI update, bugfix, etc.

UI and little graphic update. I added new things: -new UI -tutorial -venom doesn't like other opponents, just as they don't like him. -curse mode -weapon statistics now depend on who is wielding them. -enemy can now disintegrate -elevators. -clicking the gameplay modification button again resets the character's statistics. -some bug fixes. -many other small changes. Unfortunately, I don't have anyone to thoroughly test my game with, and I can't check everything on my own, so there "may be"(xd) quite a few bugs. If anyone wants me to add something, please write it in the review or in the community discussion. I've added a lot of things to the solo/co-op mode, but you won't see them in this update yet. [img]{STEAM_CLAN_IMAGE}/44111803/071e47b965564e7c52809f62954ea5844ca7f6a4.png[/img]