Having played it and because I think in Old, I have determined:
That this is an excellent LunarLanderDefenderFrogger!
Lethal truckThing = Alligator with mouth open in Frogger
Do higher levels (i never got there) have more than one lethal truck thing?
It merits a high score system and splash screeny system,
Super pleased.
Gave you an itch follow, consider doing the same if you like my things: