I've just died at the level 11 of the game.
and here is my idea about it. these are my idea about the game after reaching to higher levels:
in the higher levels, after level 8 or9, the game gets very very unbalanced, there are enemies everywhere, boath left and right, and their speed is getting faster but your speed is the same as the time of starting the game. many of the enemies have shields and killing each of them takes much time.
the strategy that was present at the lower levels, I mean jumping and shooting and keeping the distance from enemies is completely useless in higher levels, because you are getting outnumbered by enemies and cannot do much about it, you can only hold your finger at the spacebar and shootw without ame at your left or right, and the sound of your gun, makes you unable to hear other game sounds.
in adition to these, there are something like fireballs or something that if they heat you, they slowly make your shild heat and reducing your shield's health point and you need to make your shield cool by buying something from store, but the sound of your shield getting heater and getting destroyed is very loud so you can't hear your footsteps and the sound of the store.
after level 10, the possibility of crafting opens, which you need to find medal and wood and then craft them and make new weapons, but at that levels, the game is so hard that you can't focus on crafting anymore.
there is no hotkey to tell you the numbers of wood and medals that you have at the moment also.
I think the game should have a save feature or something like this.
and it would be cool that the game has a safeZone place for you to organize your stuf, reload your weapons and so on.
the game map should increase in size after reaching to higher levels, and the numbers of enemies should be reduced. there is something to do to make the game balance.
thanks for reading and sorry for my poor english
All the best,