Great game, needs a little tweaking

I love the game, the mechanics, the weapons!! 2 tweaks would give this game 5⭐️ from me.
(1) I would like to see a few more missions since it takes a little bit of time to gain levels.
(2) I also need an option to be able to merge weapons together to get a higher grade of that weapon or higher stats from the merge.

Thank u Devs for this great game!! I look forward to your updates.

Lord Asunder about Fortress: Destroyer