Not if you would fix some gitches, including the fact that after you are hit you often reappear on top of a martian, and you still get hit when a martian goes completely off the screen and you move to his position. Are you overriding setLocation to get the martians to go smoothly off the screen? If so, Grenfoot's collision detection (which does bounds checking even if you override setLocation) system still thinks the martian is pressed against the left side even if he's far off the screen, so you get a false collision.

Those new levels are HARD!!! :) But I still managed to complete them.

Somehow the message boxes glitched when I clicked/pressed anter a few times rapidly and caused the part with the hologram to repeat in the game level and then another charater to appear in the level, both operated by the arrow keys.