CrackShot Tower
About
Use your shield to block incoming projectiles as well as trip switches to unlock lower floors. Destroy enemies with a wide variety of weaponry before they can overwhelm you. Scavenge ammo from enemies and crates and work your way down the tower.
This game is just an old project I worked on right after I graduated college. It was made using GameMaker and the limitations of that engine are obvious. Porting to HTML wasn't even an option.
It's not very focused and doesn't have an ending but is playable all the way through, although it might be a bit confusing and overly-difficult.
UI and audio are bare-bones so be prepared for crusty sounds and boring menus.