I think adding more babies and enemies into the game, or a new floor, for example a new floor could be in the burning basement or cellar, and the enemies that spawn there are the walking spider sack, flaming fatty, and scatter mulliboom which explodes in a cross formation but is slower than mulliboom, and the special effect for the burning basement could be like falling explosive barrels which explode in a 3 by 3 which target randomly on the map, and on the cellar a spider web comes down and places some spider sacks which spawn spiders at an interval of 0.5 seconds on land to 0.3 after, and both stages could have a cool boss fight like a double fight with lil loki and little horn which has two boss ai but have the boss hp shared together, you can do what you want with their ai, but please just add spider s and spider sacks