Alien-shooter-td-darksiders Link

Don't just buy new guns; expand basic features of existing ones. You can also disassemble old weapons to recoup money and auxiliary supplies.

Best used as general-purpose units against unarmored, medium-strength enemies. Avoid having them waste ammo on heavily armored targets.

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When placing two identical units together, give one a slightly lower-tier weapon. This causes them to fire at different cadences and often at different enemies, reducing wasted DPS and retargeting time.

Used primarily to push enemies back. Always place them facing the enemy directly (not from the side) to maximize the knockback effect. Don't just buy new guns; expand basic features

Many levels contain hidden secrets (e.g., Mission 1 has 3 secrets, while others can have up to 14) that provide early access to powerful gear like Miniguns and Plasma Rifles.

Cryo units slow down fast enemies, allowing your high-damage troops more time to fire. Place them at corners for maximum area impact. Avoid having them waste ammo on heavily armored targets

These are essential for late-game survival. Place them at the very start of the enemy path to strip armor before they reach your other units. Focus upgrades on "damage to armor" first.