God's Trigger is a top shooter, with some gimmicks.   One of the big ones is having two exchangeable characters. This isn't uncommon, and it probably goes as you'd expect - they have complimentary special moves, that are needed in some places. One is an angel and one is a demon, and they are apparently trying to stop the apocalypse.   There is also some progression with upgrades, although a bit slower than I'd like. You buy those at every level start with experience, which you get by killing enemies and laying around in boxes on the levels.   There is a checkpoint system, which is important as you get killed with one shot (apparently they don't make angels and demons like they used to...) Some can take a couple of minutes, which make for some very annoying replays of rooms.   Given this, the levels feel a bit like a puzzle, where you try to figure out a sequence that won't get you killed. There is also a stealth option, but it is a little hard to get away with i...