Softlock and possible hardlock. If you run out of items (very possible if you tried to use them outside of battle) and ammo (very possible since you can miss and the 8 ammo attack doesn't really scale well for the ammo you use) and tp, you can't take any actions or escape (locked at second battle).
Game crashes if you try to equip gear.
You can use the rpg and grenades out of battle, which consumes them. Consuming the smoke bomb doesn't seem to do anything for avoiding battles.
Story is a bit off since you just suddenly are in this other world.
How does anyone leave the apartment? There is no door out and no path out.
You can't return to your room once you leave, that feels odd.
You can't enter your bathroom either?
Interesting dodge mechanic, but can be annoying with different attack speeds, especially when dodging one group will kill you with the other and dodging the other will kill you with one group.