Overall this is a functional pack- Starting with an escape sequence was pretty interesting, and you pulled off the effect pretty well to get the pack started. Act 2 is a bit short and empty, there wasn't really much content to it, but the visual design is pretty nice, it needs more gameplay to really stand out as a fun starting level.
Act 3 doesn't work- The arena doesn't do anything to affect the gameplay of the boss, and you only fight him on one fraction of the Arena! There's definitely potential for better object placement and arena building here.
One last thing, I know you want people to load asset pack first... and this is technically allowed, hell, I've done it before, but it would be 1000x more convenient for the end user if you merge the objects and textures from asset pack into the file.
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