Salvo Shuffle

Salvo Shuffle is a turn-based bullet-hell roguelike with combat mechanics similar to Undertale. Enemies can only damage you by spawning individual bullet-hell attacks (aka. salvos).
Defeat the most challenging foe to make your life easier or keep them all alive for a massive combo and coin multiplier. The choice is yours!
The salvos might be simple on their own, but because you fight many enemies simultaneously, the actual bullet hell can vary drastically from fight to fight.

Ascend the procedurally generated Firework City and collect various augments to assist you in your fights. Manage your coins and health until you make it to the top and defeat the final boss that is waiting for you there.
The City is composed of many interconnected spaces. Choose one of up to four spaces at a time until you reach the end, on the 30th space. Plan your route carefully!
Some spaces are dangerous fights, while others might give you a temporary buff, some coins, or health, or they might be a shop for you to purchase new augments or to upgrade your items.

Between dodging the enemy attacks, you can strike back by using your weapon or the many different augments you collected in Firework City.
Focus fire is of the utmost importance. If one threat is giving you more trouble than most, it could be a good idea to focus on killing that enemy first. However, you will also be rewarded for leaving enemies alive for longer. It's high risk, high reward.

Augments are the run-defining items of Salvo Shuffle. There are active augments that you can trigger manually and passive augments that either affect a stat or get triggered automatically under certain conditions.
Every augment is distinct from the next and changes the gameplay in a significant manner.
Applying status effects is one possible effect of augments. They can greatly impact how difficult the next wave of salvos is going to be.
Watch out though, most augments also have minor negative effects, so choose carefully!

The game offers many unique challenges to increase the difficulty of a run.
There are 10 challenges with up to 3 levels of difficulty. Although they make the game overall more difficult, they also grant you more exp and coins. So if you want to use more augments in a run, this is where you'd do it.

The game also features an action difficulty slider in the options to slightly decrease or increase the difficulty of salvos with no penalty or guilt attached.

Some achievements will also greatly affect your run and will reward you with a player cosmetic to use.

And best of all: Salvo Shuffle is completely free to play! No in-app purchases, ads, or anything.
The game also has a public discord server (link on the right).