I updated the game and now there is an indicator that shows when a player (or enemy) is reloading and how much time is left till the reload is complete. Thanks for the feedback :)
Yeah, sorry I didn't get the reloading... now it's much better. Also knowing when the enemy is reloading you can approach them without worrying they shoot you.
Finally I beated the first two levels (yay XD), I will try to beat the last one too.