I'm going to hit pretty hard here, but I'll first say that the game doesn't feel bad to play, Your sprite and the enemies are big compared to the normal survivors. Maybe this wouldn't be an issue but everyone moves very quick and enemies appear on screen headed right to you without warning. You just lose life. The Straw seems to be practically required (but not as a starting weapon) Additionally, enemies are bullet sponges. The game might as well be called "Sponge Survivors". I played the Straw block on...

I felt like I was doing no damage and he was healing himself? Do I just need to upgrade?

Hello. How many areas / characters does this have? Can you see everything in around 4hrs? :)

I notice on rescue missions, when the mission has been successful and the Steam achievement is awarded, the menu occasionally says, "Mission failed." It doesn't seem to affect the outcome, just a cosmetic note.

I bought that. I got the skull and trash in level and nothing happened? Do you have to max them both out?