Things I liked:
-Solid shooting system (Inspiration from Horizon: Zero Dawn?)
-You had customization which is huge with shooter games
-fun practice system that could help with aiming and movement if this was part of a full game, so this is awesome and it would be cool to see how it could be implemented into a full game
Things to improve:
-not sure how the theme fits in. Is it really an improvement to make it fit the theme? Not really, but just a small critique
-Moving fast to aim lags the game - it's not smooth and I would want it to be, especially if its a game where you need good aim as implied by the training to train your aim
-something to help indicate when you are close to the edge - visual, SFX, UI heads up / warning etc would help (I definitely did not fall off multiple times!....)
-Not being able to shoot the targets that shoot back felt more frustrating than challenging, especially when their hitboxes got in the way of the target I was aiming at behind them. Either they should be destructible, or they should not have hitboxes to interfere with aiming (or another option, just throwing out some ideas)
Overall;
A fun shooter game! Does not really feel like it fits with the theme which is a huge bummer in the spirit of the jam, but still a cool game with a solid foundation and some amazing work done here! I am thoroughly impressed- keep it up!! Hope this feedback is helpful! :)