- When fighting the final boss of objective 5 you can actually jump right inside of the monster if you sneak behind and jump on the balls. Drinking the rocket fuel can let you do this. He can kill you in one hit if your stuck inside (hard mode).

I can also confirm this can also happened with the regular mini bosses.

- There are some minor line of sight issues when shooting at the eye ball of the main bosses. The game does't recognize a direct hit and it takes 5-6 shots until hit. This is only noticeable when you're fighting the bosses alone and all your team mates are KO'ed.