Thanks for the feedback, guys!
@ sharprm: I dunno about the in sync glow... I kinda like the glow, the way it is.
@ mangust: Edited the parts you suggested...
@ junkboy: It's not the final boss, It's a normal enemy... though it only appears once in the level. The selout does indeed look a bit rough on the forum's BG... The ingame tiles are pretty dark though, and it does work there pretty well.
Here's an update... redid the leg-animation, because someone at pixeljoint pointed that out... though I'm not entirely happy with the current result...
I also animated the belly-hatch, where it will constantly drop mines.
here's a version with the mine:

and here a version without the mine:

and here's the mine it drops...forgot to add transparency, but what the heck... Also, only the first 3 frames are the idle-animation, the other frames are the "I'll explode soon"-frames, when the mine has been hit by the player's shots.
