I did all 50 levels with all tower and magic levels maxed and got a "skeleton levels complete" message.
Even with all upgrades its not 100% that you make it, depends on how many mobs come from the sides, and you can get killed in 3-4 hits.
Needs less grind, more balancing and a better reward from winning than a 1 second message, but hey it was fun!
Viewing post in Solo Tower: Idle Roguelike comments
Wow, I'm impressed that you completed it! Thank you so much for taking the time to play and finish my game! I'm preparing an update on the balance issue; I received a lot of feedback and I believe it's the main problem with the game. Soon there will be more roguelite elements in the style of Vampire Survivors that I hope will help you not feel so weak during gameplay. If you have any more suggestions, I'm here, and thanks again for completing the game.