Very cool concept. I enjoyed it. It was fun to create a lot of slimes and then slip away while the enemies were distracted with them.
The guns are a bit unforgiving and took several tries to slip past. I think if there was a button to gather your slimes around you, that would help. When they dashed at the gun they didn't give me good cover and when I would try to run ahead I wouldn't have any cover with them being behind me. It felt a bit luck based to have my slimes in the right places at the right time to pass the multiple guns. That said, it was not a major issue, I was able to complete it. Good work.