Thanks for checking it out and leaving your thoughts!
The auto-shooting was really just something to make the events easier while I learn the Construct system better. Had a few people mention they'd prefer manual shooting, so that's definitely happening.
The bullet chain is something I'll need to play with for sure. I'm going to look through other shooters similar to this and see how they handle enemy bullets. During my own playthroughs I noticed it could get pretty difficult pretty quickly (although my wife kicked my butt wih ease :) )
I completely agree about the explosions. All graphics so far were included with Construct 2, so I haven't really ventured into tweaking them yet. I'd like to get the gameplay done before I start work on all the assets on my own (will probably need to hire that part out, as graphics aren't really in my skill set)
I really like the cooldown idea. I built one for speed boosting in a little experiment I was doing, the same events will basically work with this too. Thanks for the idea.
I've got a number of upgrades planned. When I get the upgrade store done, the player will essentially start out by dying quite a few times very quickly, and eventually get super powerful and can basically crush everything that comes at them.
I'll update this thread more when I've got new features to check out.