There are a lot of different interactions between objects in the game and we have not polished all of them, so there are could be a lot of problems. We are sorry, but we don't plan to fix anything now, we work on another games, so we don't want to modify anything except bugs.
1) Yes, it works that way, we keep it as "kinetic energy" of the ball

2) You can kill a monster only if you throw anything down to the monster. So sorry..
3) You must set the teleport target position to make it works well. When you have the mouse on the teleport tile, press left CTRL-T, the cursor is changed to T cursor. Now you must to click to a position, where do you want to teleport objects (so exit teleports tiles are only the level decorations )
4) don't play other games, they are weird!

5) It doesn't crash on my computer, but yes - it's a bug (due to the interaction between lifts and breakable walls), because it lift up the breakable wall. Sorry..
