These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Esoteric Happy Ending - Judging by the very negative portrayal of consumerism and mundane thinking that Kevin's parents represent, the filmmakers might see their total destruction to be a good thing for Kevin in the long run.
Genius Bonus - The unspoken tension between Agamemnon and his wife is a reference to their fate in Greek mythology: their marriage ends in murder. It's perhaps best that Kevin isn't around for that.
The Supreme Being's head chasing the Time Bandits.
Evil's army. As if a hoard of screeching, 8 ft. tall creatures with hook hands and cow skull heads weren't scary enough, they can also shoot missiles out of their eyes.
What Do You Mean, It Wasn't Made on Drugs? - The weirdness builds up during the entire movie. Once the protagonists enter the Time of Legends, it gets downright trippy, with the final showdown against Evil as one of the most surreal moments in the history of cinema.