The first upgrade requirement for the flamethrower says to incinerate 10 "grunts" but I have no idea what spider they classify as a grunt? Is it just the regular black ones?

I was play and I couldn't find the last two pieces so I reloaded and even looked up a tutorial but those pieces still aren't there! What do I do?

Running on 6.6 hours of gameplay with pretty much everything done except that one spacebux that just doesn't seem to be ANYWHERE. Not even when I use the spider potion + teleporter on the airlock to try and look out of bounds in the case it was anywhere. *Found 1 light ammo funnily enough.* Even after looking through the whole ship with the sniffer pro I'm getting nothing... Is this a bug or am I being dumb? *Edit: This has been found with the help of Minueling.*...

I'm at 99% completion, have done everything else, and the only thing I have left is an item to clean in the mansion. I followed a guide and all 5 are cleaned. The grandfather clock in the foyer. The sheet in the attic. The trolley in the basement. The footstool in the lounge. The radiator in the bathroom. Yet it's still showing 4/5 items and I can't get my final achievement. Any possible help?...

Am I doing something wrong with one of these battle challenges? I have to destroy 8 of them in a minute and a half, but I've ever seen 5 at most during the challenge. One of the runs only spawned 3.