Maybe highlighting the flower on the tree enemies I only found out accidentally that you can kill them in one hit by knocking it off while they're still. Fast but dangerous to tie you up so slower things can reach you is kind of a classic for a reason. But that's personal annoyance more than a design critique. They have just a bit too much health to stop them once they've charged you, and they have a bad habit of pairing them with enemies that means you can't really take the time to jump over them, at least if you don't want to take other hits. I almost want to call them dogs, that run around on all fours. By the time your friend goes down, you'll have either almost finished off the first form, or possibly even a good way through chunking down the second. Bonus, you'll be fighting right next to the ammo dump so you'll have plenty of access to all the bullets you'll need. Actually, even that one has ways to manage the friendly giant lasts a lot longer if you make a beeline to the right and tie up the ranged guy, and his attacks are incredibly dodgeable so it's not that difficult either.
